The Adria company were better known for their motor vehicle and boat engines, but between 1912 and 1928 they built a range of 276cc, 282cc, 294cc and 346cc side-valvesingle-cylinder powered bikes.[1][2]
References
↑ Erwin Tragatsch; Ash, Kevin. The New Illustrated Encyclopedia of Motorcycles, Quantum Publishing, London, 2000 ISBN1-86160-342-8
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