TY  - BK
AU  - Ardrey,R.
TI  - The social contract:  A personal inquiry into the evolutionary sources of order and disorder
U1  - 591.38 
PY  - 1970///
CY  - New York (USA)
PB  - Atheneum, 
KW  - Animal behavior
KW  - Human behavior
KW  - Human evolution
ER  -