00677nam a2200217Ia 4500008004100000020001800041040001300059082001400072100001700086245009000103250002000193260002700213300002500240500006500265650001300330650002500343650002400368990003700392991001100429999001900440191130s1997##################000#0#eng##  a9780140244045  aACLcACL  a304.5 RID  aRidley, Matt  aThe origins of virtue : human instincts and the evolution of cooperationcMatt Ridley  a1st American ed  aNew YorkbVikingc1997  aviii, 295 p. ; 24 cm  aIncludes bibliographical references (p. [267]-284) and index  aAltruism  aEthics, Evolutionary  aEvolution (Biology)  aaa607ca0ac10000c56ce7a0a0d5ad289  a220362  c396999d396999