TY  - GEN
AU  - NEBEL, Bernard J.
TI  - Environmental science: the way the world works
SN  - 0-13-282203-2
AV  - QH 541 .N39 
PY  - 1990///
CY  - Englewood Cliffs , NJ
PB  - Prentice Hall
KW  - Ecology
KW  - Human ecology
KW  - Pollution- Environmental aspects
ER  -