Vzaimnai︠a︡ pomoshch', kak faktor ėvoli︠u︡t︠s︡ii.
Published: 1919
Place of publication: Ni︠u︡-Iork
Language: rus
Number of pages: 357
Subjects: Cooperation; Social groups; Sociology
Notes: Translation of Mutual aid; a factor of evolution.

Bibliographical footnotes.