"Conducta (Psicologia)" . . "Human evolution." . . "Anthropology, Cultural." . . . "Challenge to survival a philosophy of evolution"@en . . . . . . . . . . . . . . "Challenge to survival : a philosophy of evolution" . . . . . . . . . . . . . . . . . . . . . . "Challenge to survival"@en . "Challenge to survival" . . "Challenge to survival : [a philosophy of evolution]" . "Challenge to Survival" . "Challenge to survival: a philosophy of evolution" . . . . . . . . "Primates." . . "Behavior, Animal." . . "EvoluciĆ³ humana." . . "EvoluciĆ³ cultural." . . "Conducta social dels animals." . . "Primates Behavior." . . "Primats." . . "Biological Evolution." . . "Psychology, Comparative." . . "Comportament social en els animals." . .