TY  - BOOK
AU  - Williams,Leonard
TI  - Challenge to survival: a philosophy of evolution
SN  - 0233962964
AV  - GN273 .W5
PY  - 1971///
CY  - London
PB  - Deutsch
KW  - Human evolution
KW  - Psychology, Comparative
KW  - Social evolution
KW  - Primates
KW  - Behavior
N1  - Includes bibliographical references
ER  -