TY  - GEN
AU  - Gunningham, William P.
AU  - Gunningham, Mary Ann
TI  - Principles of environmental science: inquiry and applications
SN  - 0070581126
U1  - 363.7 
PY  - 2004///
CY  - New Delhi
PB  - McGraw Hill
KW  - Environmental Sciences
ER  -