TY  - BOOK
AU  - Emmel Thomas C
TI  - Introduction to ecology and population biology
U1  - Y:5:(G:5), L3 
PY  - 1973///
CY  - New York
PB  - Norton         
KW  - Family Planning
N1  - Bibliography:  p 176-177; Glossary: p  178-182
ER  -