TY  - BOOK
AU  - Boyd,Robert
AU  - Silk,Joan B.
TI  - How humans evolved
SN  - 0393970760
U1  - 599.938 
PY  - 1997///
CY  - New York
PB  - W.W. Norton
KW  - Human evolution
KW  - Human biology; Behavior; Ecology; Social behavior; Genetic diversity; Life cycle
N2  - General Science
ER  -