Gegenzayṭige hilf bay ḥayes un menshen
Subtitle: als a faḳṭor fun enṭṿiḳlung
By: fun Peṭer Ḳropoṭḳin ; iberz[etsṭ] in Idish fun Y.A. Merison.
Publisher: Ḳropoṭḳin liṭeraṭur-gezelshafṭ
Published: 1913
Place of publication: Nyu Yorḳ
Language: yid
Number of pages: 433
Subjects: Cooperation.; Social groups.; Sociology.; Mutualism.
Work titles: Mutual aid, a factor of evolution.