TY  - BOOK
AU  - Boyd, Robert
AU  - Silk, Joan B.
TI  - How humans evolved
SN  - 0-393-97477
U1  - Circ. 599.938 B789h 2000 2nd ed.
PY  - 2000///
CY  - N.Y. : 
PB  - W.W. Norton & Company, 
KW  - 1. Human evolution
N1  - Includes bibliographical references and index
ER  -