found: NUCMC data from Columbia Univ. Libraries, Bakhmeteff Archive (New York, N.Y.) for Steinberg, I.N. Papers, ca. 1918-1925(B. D. Kamkov; left Socialist Revolutionary; author of "Uroki parizhskoĭ kommuny")
found: Kto takĭe li︠e︡vye sot︠s︡īalisty-revoli︠u︡t︠s︡īonery, 1918:t.p. (B. Kamkov)
found: LC manual auth. cd.(hdg.: Kamkov, Boris; usage: Kamkov, B.)
found: Cartea de aur a Basarabiei și a Republicii Moldova, 2016:p. 102 (Camcov Boris; b. June 3, 1885; d. Aug. 29, 1938; one of the leaders of the Socialist Revolutionary Party)