TY  - BOOK
AU  - Cunningham, William P
AU  - Cunningham, Mary Ann
TI  - Principles of environmrntal science : inquiry and applications
SN  - 9780070647725
U1  - 333.72 
PY  - 2007///
CY  - New Delhi
PB  - Tata McGraw-Hill
KW  - Environmental science
ER  -