Balance studies

Blatov, N.A.Balanceology: (General Course) / Committee for the Promotion of Industrial and Economic (Commercial) Education at the Leningrad Regional Department of Trade.- 2nd ed., Cred.and add.-Leningrad: economic education, 1930. -VII, 296, [1] p., 1 l.table.: count., Ill., table .. -Bibliogr.In the text and subscription.Note..I. Leningrad Regional Department of Trade.Committee for Promoting Industrial and Economic Education 1.People (collection).Electronic copy source: PBOriginal storage location: REU