00909cam0 22003251i 450 99000735804040332120200415091921.00-674-93047-9000735804FED01000735804(Aleph)000735804FED0100073580420021021d1999----kmuy0itay50------baengGBy-------001yyUnto othersthe evolution and psychology of unselfish behaviorElliott Sober, David Sloan WilsonLondonHarvard University Press1999394 p.24 cmAltruismo171.820itaSober,Elliott53696Wilson,David Sloan309671ITUNINARICAUNIMARCBK990007358040403321XV O3 97518DTEDTEUnto others1737934UNINA