Primates and philosophers : how morality evolved /
Waal, F. B. M. de(Frans B. M.),1948-
Macedo, Stephen,1957-
Ober, Josiah.
Wright, Robert,1957-
Princeton, N.J. ; Oxford : Princeton University Press,
c2006.
Includes bibliographical references (p. [183]-196) and index.
Ethics, Evolutionary.
Primates
Altruistic behavior in animals.