TY  - BOOK
AU  - Diamond, Jared M. Jared Mason
TI  - Why is sex fun? : the evolution of human sexuality
SN  - 0297817752
U1  - 500 
PY  - 1997///
CY  - London
PB  - Weidenfeld & Nicolson
KW  - Human evolution
KW  - Sex
N1  - Includes bibliography and index
ER  -