TY  - BOOK
AU  - Bowles,Samuel
AU  - Gintis,Herbert
TI  - A cooperative species: human reciprocity and its evolution 
SN  - 9780691151250
PY  - 2011///
CY  - Princeton
PB  - Princeton University Press
KW  - Cooperation
KW  - Cooperativeness
KW  - Behavior evolution
N1  - Includes bibliographical references and index
ER  -