TY  - BOOK
AU  - Nebel,Bernard J.
TI  - Environmental science: the way the world works 
SN  - 0132830027
U1  - 333.7 23
PY  - 1981///
CY  - New Jersey
PB  - Prentice-Hall, Inc.
KW  - Eco-systems
KW  - Eco sistemas
KW  - Ecology
KW  - Ecología
ER  -