TY  - BOOK
AU  - Betzing Laura and others
TI  - Human reproductive behaviour:  A Darwinian perspective   
SN  - 0 521 32738 5
U1  - Y:5231, M8 
PY  - 1988///
CY  - New York
PB  - Cambridge University Press       
KW  - Fertility
N1  - Bibliography chapterwise
ER  -