Soviet inventions illustrated.
Derwent Publications, Ltd.
London : Derwent Information Service,
1962-1975.
Imprint varies: After July 1973, Derwent Publications, ltd.
Includes USSR patents published April 1962-    and abstracts from Biulleten' izobrentenii, no. 3-4, 1962-
Electric apparatus and appliances
Inventions
Patents
USSR official bulletin of patents & inventions
Soviet inventions illustrated. Section I, Chemical
Soviet inventions illustrated. Section III, Mechanical & general
Soviet inventions illustrated. Parts I-III complete