TY  - BOOK
AU  - Boyd, Robert.
TI  - How Humans Evolved
SN  - 0393970760
AV  - GN281.B66 1997 7752
PY  - 1997///
CY  - london 
PB  - W.W.Norton & company 
KW  - Humans Evolved
N1  - Includes bibliographical references and index
ER  -