TY  - BOOK
AU  - Arma,Karen
TI  - Environmental science
SN  - 0030470986
U1  - 333.7 
PY  - 1990///
CY  - Philadelphia, Pa.
PB  - Saunders College Pub
KW  - Conservation of natural resources
KW  - Economic development
KW  - Environmental aspects
ER  -