TY  - BOOK
AU  - Boyd,Robert
AU  - Silk,Joan B  .
TI  - How humans evolved / 
SN  - 9780393913354
U1  - 599.938 
PY  - 2011///
CY  - New York : 
PB  - W.W. Norton , 
KW  - HUMAN EVOLUTION
N1  - Includes index
ER  -