TY  - BOOK
AU  - Boyd,R.
AU  - Silk,J.B.
TI  - How humans evolved
SN  - 0393926281
AV  - DUCE GN281.B66  
PY  - 2006///
CY  - New York
PB  - W.W. Norton
KW  - Human evolution
N1  - Includes bibliographical references and index
ER  -