TY  - BOOK
AU  - Ardrey,Robert
TI  - The social contract: a personal inquiry into the evolutionary sources of order and disorder. 
U1  - 573.2  
PY  - 1970///
CY  - New York
PB  - Atheneum
KW  - Human evolution.
KW  - Human behavior.
KW  - Animal behavior.
N1  - Bibliography: p. 376-391.
ER  -