TY  - BOOK
AU  - Ridley, Matt
TI  - The origins of virtue : human instincts and the evolution of cooperation
SN  - 9780140244045
U1  - 304.5 RID 
PY  - 1997///
CY  - New York
PB  - Viking
KW  - Altruism
KW  - Ethics, Evolutionary
KW  - Evolution (Biology)
N1  - Includes bibliographical references (p. [267]-284) and index
ER  -