00909nam0-2200313---450-99000841098040332120061102140417.00-87558-024-6000841098FED01000841098(Aleph)000841098FED0100084109820061102d2000----km-y0itay50------baengUS--------001yyMutual aid<<afactor >> of evolutionPetr KropotkinBostonHorizons Books2000362p18cmforeword by Ashley Montagu and <<The struggle for existence >> by Thomas Huxley33011. ridottaitaKropotkin,Petr Alekseevic<1842-1921>173750ITUNINARICAUNIMARCBK990008410980403321XV O3 1771683DTEDTEMutual aid726360UNINA