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References
- ↑ Porter (ed) Mason's World Dictionary of Livestock Breeds, Types and Varieties, 2002, p.234
- 1 2 Armstrong, An Economic History of Northern Ireland, 1989, p.176
- ↑ McCarthy, "The History of Pig Breeding in Ireland" in Journal: Department of Agriculture and Fisheries, v 63-66 (1966), 60
- ↑ Greenslade, Modern Pig Breeding, 1952
- ↑ Watson, "Standardisation of pig production: the case of the Large White Ulster" in Ulster Folklife, v34 (1988), 2
- ↑ Watson (1988), 3
- ↑ Bell, A history of Irish farming 1750-1950, 2008, pp.269-70
- ↑ Watson, (1988), 6
- 1 2 Watson, (1998), 7-12
- ↑ McCarthy, (1966), 61
- ↑ Government of Northern Ireland, Reports of the Agricultural Enquiry Committee, HMSO, 1947, p.43