TY  - BOOK
AU  - Cunningham, William P.
AU  - Saigo, Barbara Woodworth
TI  - Environmental Sciences a Global Concern 
SN  - 007115681X
U1  - 628 
PY  - 1999///
CY  - Boston : 
PB  - McGraw-Hill, 
KW  - Environmental Sciences
N1  - NY
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/0-07-115681-X.pdf
ER  -