Convoy PQ 13

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Convoy PQ 13
Part of the Arctic Convoys of the Second World War
HMS Trinidad.jpg
HMS Trinidad
Date28/29 March 1942
Location
Result Allied victory
Belligerents
War ensign of Germany (1938-1945).svg  Kriegsmarine
Commanders and leaders
G. Ponitz L. S. Saunders
Strength
3 destroyers
  • 1 cruiser
  • 5 destroyers
Casualties and losses
1 destroyer sunk
  • 1 cruiser damaged
  • 1 freighter sunk

PQ 13 was a British Arctic convoy that delivered war supplies from the Western Allies to the USSR during the Second World War. The convoy was subject to attack by German air, U-boat and surface forces and suffered the loss of five ships, plus one escort vessel. Fifteen ships arrived safely.

Contents

Background

Arctic convoys

In October 1941, after Operation Barbarossa, the German invasion of the USSR, which had begun on 22 June, the Prime Minister, Winston Churchill, made a commitment to send a convoy to the Arctic ports of the USSR every ten days and to deliver 1,200 tanks a month from July 1942 to January 1943, followed by 2,000 tanks and another 3,600 aircraft more than already promised. [1] [a] The first convoy was due at Murmansk around 12 October and the next convoy was to depart Iceland on 22 October. A motley of British, Allied and neutral shipping loaded with military stores and raw materials for the Soviet war effort would be assembled at Hvalfjordur, Iceland, convenient for ships from both sides of the Atlantic. [3] By late 1941, the convoy system used in the Atlantic had been established on the Arctic run; a convoy commodore ensured that the ships' masters and signals officers attended a briefing before sailing to make arrangements for the management of the convoy, which sailed in a formation of long rows of short columns. The commodore was usually a retired naval officer, aboard a ship identified by a white pendant with a blue cross. The commodore was assisted by a Naval signals party of four men, who used lamps, semaphore flags and telescopes to pass signals, coded from books carried in a bag, weighted to be dumped overboard. In large convoys, the commodore was assisted by vice- and rear-commodores who directed the speed, course and zig-zagging of the merchant ships and liaised with the escort commander. [4] [b]

Following Convoy PQ 16 and the disaster to Convoy PQ 17 in July 1942, Arctic convoys were postponed for nine weeks and much of the Home Fleet was detached to the Mediterranean for Operation Pedestal, a Malta convoy. During the lull, Admiral John Tovey concluded that the Home Fleet had been of no great protection to convoys beyond Bear Island, midway between Spitsbergen and the North Cape. Tovey would oversee the operation from Scapa Flow, where the fleet was linked to the Admiralty by landline, immune to variations in wireless reception. The next convoy should be accompanied by sufficient protection against surface attack; the longer-range destroyers of the Home Fleet could be used to augment the close escort force of anti-submarine and anti-aircraft ships, to confront a sortie by German ships with the threat of a massed destroyer torpedo attack. The practice of meeting homeward-bound QP convoys near Bear Island was dispensed with and QP 14 was to wait until Convoy PQ 18 was near its destination, despite the longer journey being more demanding of crews, fuel and equipment. The new escort carrier HMS Avenger (Commander Anthony Colthurst) had arrived from the United States and was added to the escort force, to give the convoy air cover. [6]

Signals intelligence

Bletchley Park

Photograph of a German Enigma coding machine Enigma Decoder Machine.jpg
Photograph of a German Enigma coding machine

The British Government Code and Cypher School (GC&CS) based at Bletchley Park housed a small industry of code-breakers and traffic analysts. By June 1941, the German Enigma machine Home Waters (Heimish) settings used by surface ships and U-boats could quickly be read. On 1 February 1942, the Enigma machines used in U-boats in the Atlantic and Mediterranean were changed but German ships and the U-boats in Arctic waters continued with the older Heimish (Hydra from 1942, Dolphin to the British). By mid-1941, British Y-stations were able to receive and read Luftwaffe W/T transmissions and give advance warning of Luftwaffe operations. [7] [8]

In 1941, naval Headache personnel, with receivers to eavesdrop on Luftwaffe wireless transmissions, were embarked on warships and from May 1942, ships gained RAF Y computor parties, which sailed with cruiser admirals in command of convoy escorts, to interpret Luftwaffe W/T signals intercepted by the Headaches. The Admiralty sent details of Luftwaffe wireless frequencies, call signs and the daily local codes to the computors, which combined with their knowledge of Luftwaffe procedures, could glean fairly accurate details of German reconnaissance sorties. Sometimes computors predicted attacks twenty minutes before they were detected by radar. [9]

B-Dienst

The rival German Beobachtungsdienst (B-Dienst, Observation Service) of the Kriegsmarine Marinenachrichtendienst (MND, Naval Intelligence Service) had broken several Admiralty codes and cyphers by 1939, which were used to help Kriegsmarine ships elude British forces and provide opportunities for surprise attacks. From June to August 1940, six British submarines were sunk in the Skaggerak using information gleaned from British wireless signals. In 1941, B-Dienst read signals from the Commander in Chief Western Approaches informing convoys of areas patrolled by U-boats, enabling the submarines to move into "safe" zones. [10] B-Dienst had broken Naval Cypher No 3 in February 1942 and by March was reading up to 80 per cent of the traffic, which continued until 15 December 1943. By coincidence, the British lost access to the Shark cypher and had no information to send in Cypher No 3 which might compromise Ultra. [11]

Prelude

Luftflotte 5 tactics

As soon as information was received about the assembly of a convoy, Fliegerführer Nord (West) would send long-range reconnaissance aircraft to search Iceland and northern Scotland. Once a convoy was spotted, aircraft were to keep contact as far as possible in the extreme weather of the area. If contact was lost its course at the last sighting would be extrapolated and overlapping sorties would be flown to regain contact. All three Fliegerführer were to co-operate as the convoy moved through their operational areas. Fliegerführer Lofoten would begin the anti-convoy operation east to a line from the North Cape to Spitzbergen Island, whence Fliegerführer Nord (Ost) would take over using his and the aircraft of Fliegerführer Lofoten, that would fly to Kirkenes or Petsamo to stay in range. Fliegerführer Nord (Ost) was not allowed to divert aircraft to ground support during the operation. As soon as the convoy came into range, the aircraft were to keep up a continuous attack until the convoy docked at Murmansk or Arkhangelsk. [12]

German air-sea rescue

Example of a Heinkel He 59 search and rescue aircraft (1940) Heinkel He 59 SAR plane in flight 1940.jpg
Example of a Heinkel He 59 search and rescue aircraft (1940)

The Luftwaffe Sea Rescue Service ( Seenotdienst ) along with the Kriegsmarine, the Norwegian Society for Sea Rescue (RS) and ships on passage, recovered aircrew and shipwrecked sailors. The service comprised Seenotbereich VIII at Stavanger covering Stavanger, Bergen and Trondheim and Seenotbereich IX at Kirkenes for Tromsø, Billefjord and Kirkenes. Co-operation was as important in rescues as it was in anti-shipping operations if people were to be saved before they succumbed to the climate and severe weather. The sea rescue aircraft comprised Heinkel He 59 floatplanes, Dornier Do 18 and Dornier Do 24 seaplanes. [13]

Oberkommando der Luftwaffe (OKL, the high command of the Luftwaffe) was not able to increase the number of search and rescue aircraft in Norway, due to a general shortage of aircraft and crews, despite Stumpff pointing out that coming down in such cold waters required extremely swift recovery and that his crews "must be given a chance of rescue" or morale could not be maintained. After the experience of Convoy PQ 16, Stumpff gave the task to the coastal reconnaissance squadrons, whose aircraft were not usually engaged in attacks on convoys. They would henceforth stand by to rescue aircrew during anti-shipping operations. [13]

Convoy

PQ 13 comprised 19 merchant ships; seven British, four American, one Polish, four of Panamanian and one of Honduran registry. It was commanded by Commodore D. A. Casey in River Afton. The convoy was escorted for the first stage of its voyage, from Scotland to Iceland, by a Local Escort Group, of two destroyers and an ASW Trawler. For the second stage, from Iceland to the Soviet Union, the Ocean escort was two destroyers and two trawlers, augmented by three whalers being transferred to the Soviet Navy. The Ocean escort was commanded by Capt. L. S. Saunders, in the cruiser HMS Trinidad.

Home Fleet

In support of the convoy escort, and guarding against a sortie by the German battleship Tirpitz, was a Heavy Cover Force, comprising the battleships Duke of York (Vice Admiral A. T. B. Curteis commanding), King George V, battlecruiser Renown, aircraft carrier HMS Victorious, the cruisers Kent and Edinburgh and sixteen destroyers, Ashanti, Bedouin, Echo, Escapade, Eskimo, Faulknor, Foresight, Icarus, Inglefield, Ledbury, Marne, Middleton, Onslow, Punjabi, Tartar and Wheatland. This force was intended to accompany PQ 13 at a distance until it was past Bear Island.

Action

The convoy sailed from Loch Ewe in Scotland on 10 March 1942 and arrived in Reykjavík on 16 March. After the departure of three ships, bound from Loch Ewe to Reykjavík only and the first stage escort, collecting a further three ships bound from Reykjavík to Murmansk and the close escort for the voyage, Convoy PQ 13 left Reykjavík on 20 March. The voyage was uneventful until 24 March, when the convoy was struck by a four-day storm, that scattered the convoy. The ships were dispersed over a distance of 150 nmi (280 km; 170 mi). Over the next few days the ships coalesced into two groups, of eight and four, with four others proceeding independently.

Example of a German Type 1936-class (Narvik class) destroyer Narvik-class destroyer.jpg
Example of a German Type 1936-class (Narvik class) destroyer

On 28 March the ships were sighted by German aircraft, and attacked, Raceland and Empire Ranger being sunk. Three Type 1936A-class destroyers (Narvik-class to the British) Z24, Z25 and Z26 (Kapitän zur See G. Ponitz), sortied from Kirkenes. The German destroyers intercepted and sank Bateau on the night of 28/29 March, before falling in with Trinidad and Fury in the early hours of 29 March. Z26 was badly damaged by the cruiser Trinidad, sinking later after an attack by Oribi, Eclipse and the Soviet destroyer Sokrushitelny . Trinidad was hit by her own torpedo (its gyroscope froze). [14] The remaining German ships broke off the action and Trinidad, escorted by Fury and Eclipse, limped into Kola Inlet, arriving midday on 30 March.

The ships of Convoy PQ 13 came under U-boat attack. Induna was sunk by U-376, and Effingham by U-435. The destroyer Fury obtained an asdic contact, thought to be a U-boat, attacked it and was credited with the destruction of U-585 but post-war analysis found that U-585 was lost elsewhere. By 30 March most ships had arrived at Murmansk; the last stragglers came in on 1 April. Six ships were lost from the convoy. The Germans sank five freighters and on 1 April the whaler HMS Sulla was sunk by U-436; Trinidad, was damaged. A German destroyer had been sunk. Fourteen ships had arrived safely, more than two-thirds of the convoy. The freighter Tobruk was credited with shooting down one bomber and another probable on 30 April. [15]

Allied order of battle

Convoyed ships

Loch Ewe–Reykjavík−Murmansk [16]
ShipYear GRT FlagNotes
SS Ballot 19226,131Flag of Panama.svg  Panama Joined Reykjavík
SS Bateau 19264,687Flag of Panama.svg  Panama Joined Reykjavík, sunk 29 March, Z26, 7 surv.
SS Dunboyne 19193,515Flag of the United States (1912-1959).svg  United States
SS Effingham 19196,421Flag of the United States (1912-1959).svg  United States Straggler, sunk 30 March, U-435, 70°28′N35°44′E, 12† 31 surv
SS El Estero 19204,219Flag of Panama.svg  Panama
SS Eldena 19196,900Flag of the United States (1912-1959).svg  United States
SS Empire Cowper 19417,164Civil Ensign of the United Kingdom.svg  United Kingdom
SS Empire Ranger 19417,008Civil Ensign of the United Kingdom.svg  United Kingdom Straggler, 28 March, Ju88s, 72°10′N, 30°00′E, crew POW
SS Empire Starlight 19416,850Civil Ensign of the United Kingdom.svg  United Kingdom Murmansk, bombing 3 April – 1 June, sunk
SS Gallant Fox 19185,473Flag of Panama.svg  Panama
SS Groenland 19141,220Civil Ensign of the United Kingdom.svg  Merchant Navy Loch Ewe to Reykjavík only
SS Harpalion 19325,486Civil Ensign of the United Kingdom.svg  United Kingdom
SS Induna 19255,086Civil Ensign of the United Kingdom.svg  United Kingdom Straggler, sunk 30 March, U-376, 70°55′N, 37°18′E, 31† 19 surv
Lars Kruse 19231,807Civil Ensign of the United Kingdom.svg  Merchant Navy Loch Ewe to Reykjavík
SS Mana 19203,283Flag of Honduras (2022-).svg  Honduras
Manø 19251,418Civil Ensign of the United Kingdom.svg  Merchant Navy Loch Ewe to Reykjavík
SS Mormacmar 19395,453Flag of the United States (1912-1959).svg  United States
SS New Westminster City 19294,747Civil Ensign of the United Kingdom.svg  United Kingdom 3 April bombed at Murmansk, beached, 3†
RFA Oligarch 19186,897Government Ensign of the United Kingdom.svg  United Kingdom Fleet oiler
SS Raceland 19104,815Flag of Panama.svg  Panama Sunk, bombers
SS River Afton 19355,479Civil Ensign of the United Kingdom.svg  United Kingdom Convoy Commodore, Captain Denis Casey
SS Scottish American 19206,999Civil Ensign of the United Kingdom.svg  United Kingdom Joined Reykjavík, Escort oiler
HMS Silja 251Naval ensign of the United Kingdom.svg  Royal Navy Auxiliary minesweeper (T-107 in Soviet service)
HMS Sumba 251Naval ensign of the United Kingdom.svg  Royal Navy Auxiliary minesweeper (T-106 in Soviet service)
HMS Sulla 251Naval ensign of the United Kingdom.svg  Royal Navy Auxiliary minesweeper, sunk 1 April, U-436
SS Tobruk [17] 19427,048Flag of Poland.svg  Poland

Escorts

Loch Ewe–Reykjavík

Escorts: Loch Ewe to Reykjavík [14]
NameNavyClassDatesNotes
ORP Błyskawica PL navy flag IIIRP.svg  Polish Navy Hunt-class destroyer 10–16 March
HMS Sabre Naval ensign of the United Kingdom.svg  Royal Navy S-class destroyer 11–16 March
HMS Saladin Naval ensign of the United Kingdom.svg  Royal Navy S-class destroyer 11–17 March

Reykjavík–Murmansk

Reykjavík–Murmansk [14]
NameNavyClassNotes
HMS Trinidad Naval ensign of the United Kingdom.svg  Royal Navy Fiji-class cruiser 23–25 March
HMS Eclipse Naval ensign of the United Kingdom.svg  Royal Navy E-class destroyer Joined 23 March
HMS Fury Naval ensign of the United Kingdom.svg  Royal Navy F-class destroyer Joined 23 March
HMS Wheatland Naval ensign of the United Kingdom.svg  Royal Navy Hunt-class destroyer detached 23 March
HMT Bute Naval ensign of the United Kingdom.svg  Royal Navy Isles-class trawler
HMT Celia Naval ensign of the United Kingdom.svg  Royal Navy Shakespearian-class trawler
HMT Blackfly Naval ensign of the United Kingdom.svg  Royal Navy ASW Trawler Joined 23 March
HMT Paynter Naval ensign of the United Kingdom.svg  Royal Navy ASW Trawler Joined 23 March

Home Fleet

Heavy cover [14]
NameNavyClassNotes
HMS Victorious Naval ensign of the United Kingdom.svg  Royal Navy Illustrious-class aircraft carrier
HMS King George V Naval ensign of the United Kingdom.svg  Royal Navy King George V-class battleship
HMS Duke of York Naval ensign of the United Kingdom.svg  Royal Navy King George V-class battleship
HMS Renown Naval ensign of the United Kingdom.svg  Royal Navy Renown-class battlecruiser
HMS Edinburgh Naval ensign of the United Kingdom.svg  Royal Navy Town-class cruiser
HMS Kent Naval ensign of the United Kingdom.svg  Royal Navy County-class cruiser
HMS Ashanti Naval ensign of the United Kingdom.svg  Royal Navy Tribal-class destroyer
HMS Bedouin Naval ensign of the United Kingdom.svg  Royal Navy Tribal-class destroyer
HMS Eskimo Naval ensign of the United Kingdom.svg  Royal Navy Tribal-class destroyer
HMS Punjabi Naval ensign of the United Kingdom.svg  Royal Navy Tribal-class destroyer
HMS Tartar Naval ensign of the United Kingdom.svg  Royal Navy Tribal-class destroyer
HMS Echo Naval ensign of the United Kingdom.svg  Royal Navy E-class destroyer
HMS Escapade Naval ensign of the United Kingdom.svg  Royal Navy E-class destroyer
HMS Faulknor Naval ensign of the United Kingdom.svg  Royal Navy F-class destroyer
HMS Foresight Naval ensign of the United Kingdom.svg  Royal Navy F-class destroyer
HMS Icarus Naval ensign of the United Kingdom.svg  Royal Navy I-class destroyer
HMS Inglefield Naval ensign of the United Kingdom.svg  Royal Navy I-class destroyer
HMS Marne Naval ensign of the United Kingdom.svg  Royal Navy M-class destroyer
HMS Onslow Naval ensign of the United Kingdom.svg  Royal Navy O-class destroyer
HMS Ledbury Naval ensign of the United Kingdom.svg  Royal Navy Hunt-class destroyer
HMS Middleton Naval ensign of the United Kingdom.svg  Royal Navy Hunt-class destroyer
HMS Wheatland Naval ensign of the United Kingdom.svg  Royal Navy Hunt-class destroyer

Barents Sea–Murmansk

Barents Sea to Murmansk
NameNavyClassNotes
Gremyashchiy Naval Ensign of the Soviet Union (1950-1991).svg  Soviet Navy Gnevny-class destroyer27 March
Sokrushitelny Naval Ensign of the Soviet Union (1950-1991).svg  Soviet Navy Gnevny-class destroyer27 March
HMS Oribi Naval ensign of the United Kingdom.svg  Royal Navy O-class destroyer 29 March, found boats of Empire Ranger, sighted Silja adrift
HMS Harrier Naval ensign of the United Kingdom.svg  Royal Navy Halcyon-class minesweeper 28 March
HMS Hussar Naval ensign of the United Kingdom.svg  Royal Navy Halcyon-class minesweeper 28 March
HMS Gossamer Naval ensign of the United Kingdom.svg  Royal Navy Halcyon-class minesweeper 30 March, found Scottish American, Effingham and Dunboyne
HMS Speedwell Naval ensign of the United Kingdom.svg  Royal Navy Halcyon-class minesweeper 28 March

On 27 March, the convoy was joined by the Soviet ships Gremyashchiy and Sokrushitelny On 28 March the convoy was joined by HMS Harrier, HMS Hussar, HMS Gossamer and HMS Speedwell of the Sixth Minesweeping Flotilla (Commander E.P. Hinton) that sailed on 28 April for a patrol. On 29 March Harrier searched for survivors of the Empire Ranger and Speedwell attempted to intercept Harpalion but failed to find her. HMS Oribi found abandoned boats of Empire Ranger on 29 March which indicated they were picked up by other boats. (A German wireless claimed prisoners from a merchant ship, it was obvious they were from Empire Ranger. On 30 March, Gossamer found Scottish American, Effingham and Dunboyne; Gossamer received orders to proceed to the position of the torpedoed Indua but failed to find her. Hussar made contact with a group of nine ships of Convoy PQ 13 and a whaler, escorted by two Russian destroyers and a trawler. Oribi sighted the whaler Silja who had run out of fuel. Oribi was ordered to go to the aid of River Afton which was reported to have been hit by a U-boat. Harrier took Silja in tow and Speedwell escorted them. On 1 April, HMS Niger (also of the Sixth Minesweeping Flotilla) sailed to search for Sulla but returned on 3 April, having failed to find her.

German ships

Destroyers

German ships [14]
NameFlagClassNotes
Z24 War ensign of Germany (1938-1945).svg  Kriegsmarine Type 1936A-class destroyer
Z25 War ensign of Germany (1938-1945).svg  Kriegsmarine Type 1936A-class destroyer
Z26 War ensign of Germany (1938-1945).svg  Kriegsmarine Type 1936A-class destroyer Sank Bateau, 29 March, sunk 29 March

Convoy losses

After SS Ballott had been attacked on 28 March 1942, 16 members of the crew launched a lifeboat, were taken on board by Silja and then transferred to Induna.

Convoyed ships lost

Merchant ships
DateShip GRT FlagSunk byNotes
28 March Raceland 4,815Flag of Panama.svg  Panama Flag of Germany (1935-1945).svg  Luftwaffe 72°40′N20°20′E / 72.667°N 20.333°E / 72.667; 20.333 45 crew, 13†, 32 surv.
28 March Empire Ranger 7,008Civil Ensign of the United Kingdom.svg  United Kingdom Flag of Germany (1935-1945).svg  Luftwaffe 72°10′N30°00′E / 72.167°N 30.000°E / 72.167; 30.000 55 crew, 0†
29 March Bateau 4,687Flag of Panama.svg  Panama War ensign of Germany (1938-1945).svg  Kriegsmarine Sunk, Z26, 72°30′N27°00′E / 72.500°N 27.000°E / 72.500; 27.000 47 crew, 6†, 41 surv.
30 March Induna 5,086Civil Ensign of the United Kingdom.svg  United Kingdom War ensign of Germany (1938-1945).svg  Kriegsmarine Sunk, U-376, 70°55′N37°18′E / 70.917°N 37.300°E / 70.917; 37.300 66 crew, 42† [c]
30 March Effingham 6,421Flag of the United States (1912-1959).svg United States War ensign of Germany (1938-1945).svg  Kriegsmarine Sunk, U-435, 70°28′N35°44′E / 70.467°N 35.733°E / 70.467; 35.733 42 crew, 12 surv.

Aftermath

Subsequent operations

Merchant ships lost in harbour or return Convoy QP 10 [15]
Ship GRT FlagSunkNotes
Empire Starlight 6,850Civil Ensign of the United Kingdom.svg  United Kingdom Flag of Germany (1935-1945).svg  Luftwaffe Bombed at Murmansk, 3 April, 68 crew, 1†
New Westminster City *4,747Civil Ensign of the United Kingdom.svg  United Kingdom Flag of Germany (1935-1945).svg  Luftwaffe Bombed at Murmansk, 3 April, 52 crew, 2†
Empire Cowper 7,164Civil Ensign of the United Kingdom.svg  United Kingdom Flag of Germany (1935-1945).svg  Luftwaffe Sunk 11 April, Convoy QP 10, 68 crew, 18† + 1*
Harpalion 5,486Civil Ensign of the United Kingdom.svg  United Kingdom War ensign of Germany (1938-1945).svg  Kriegsmarine Sunk 13 April, U-435, Convoy QP 10, 52 crew, 0†

Notes

  1. In October 1941, the unloading capacity of Archangel was 300,000 long tons (300,000 t), Vladivostok 140,000 long tons (140,000 t) and 60,000 long tons (61,000 t) in the Persian Gulf ports. [2]
  2. By the end of 1941, 187 Matilda II and 249 Valentine tanks had been delivered, comprising 25 percent of the medium-heavy tanks in the Red Army, making 30–40 per cent of the medium-heavy tanks defending Moscow. In December 1941, 16 percent of the fighters defending Moscow were Hawker Hurricanes and Curtiss Tomahawks from Britain and by 1 January 1942, 96 Hurricane fighters were flying in the Soviet Air Forces (Voyenno-Vozdushnye Sily, VVS). The British supplied radar apparatus, machine tools, Asdic and commodities. [5]
  3. Twelve were from SS Ballot

Footnotes

  1. Woodman 2004, p. 22.
  2. Howard 1972, p. 44.
  3. Woodman 2004, p. 14.
  4. Woodman 2004, pp. 22–23.
  5. Edgerton 2011, p. 75.
  6. Roskill 1962, pp. 278–281.
  7. Macksey 2004, pp. 141–142.
  8. Hinsley 1994, pp. 141, 145–146.
  9. Macksey 2004, pp. 141–142; Hinsley 1994, pp. 141, 145–146.
  10. Kahn 1973, pp. 238–241.
  11. Budiansky 2000, pp. 250, 289.
  12. Claasen 2001, pp. 201–202.
  13. 1 2 Claasen 2001, pp. 203–205.
  14. 1 2 3 4 5 Ruegg & Hague 1993, p. 29.
  15. 1 2 Miciński, Huras & Twardowski 1999, pp. 319–324.
  16. Jordan 2006, pp. 107, 141, 159, 186, 400, 404, 406, 498, 500, 505, 508, 580, 593; Mitchell & Sawyer 1990, pp. 52, 87, 125–126; PQ 13 2025; Gothro 2017.
  17. Miciński, Huras & Twardowski 1999, pp. 315–316.

References

Further reading