TY  - BOOK
AU  - Boyd,Robert
AU  - Silk, Joan B
TI  - How humans evolved
SN  - 9780393978544
U1  - 599.938 21
PY  - 2003///
CY  - New York
PB  - W.W.Norton and Company
KW  - Human evolution
N1  - Include index
ER  -