TY  - BOOK
AU  - Cunningham,William P.
AU  - Cunningham,Mary Ann  .
TI  - Principles of environmental science : inquiry and applications / 
SN  - 0070647720
U1  - 363.7 
PY  - 2007///
CY  - New Delhi : 
PB  - Tata McGraw-Hill Publishing , 
KW  - ENVIRONMENTAL SCIENCE
N1  - Includes appendix and index
ER  -