Vzaimnaia Pomoshch’, Kak Faktor Evoliutsii ;

N’iu-Iork: N. P., 1919. Appears to be the first US Russian language edition. Medium octavo in black printed paper wraps; 357 p. , notes, bib., index; 21 cm. Wrapper have a few chips at edges; overall a Very Good+ copy. Binding tight, pages clean. Paperback.

Russian language edition of: Mutual aid, a factor of evolution (Mutual Assistance, Factors of Evolution). Scarce.