TY  - BOOK
AU  - Vega,Milagros A.
TI  - Biology and the environment
U1  - 570 V521 1982 
PY  - 1982///
CY  - Manila
PB  - Goodwill Trading Co., Inc.
KW  - Biology
N1  - Includes bibliography, appendix, glossary, and index
ER  -