Principles of environmental science :
Cunningham, William P.
Principles of environmental science : inquiry and applications / William P. Cunningham, Mary Ann Cunningham. - 4th ed. - New Delhi : Tata McGraw-Hill, 2008. - xviii, 428 p.
0070647720 (tata McGraw-Hill): 0071101942 (McGraw-Hill):
Environmental sciences.
Principles of environmental science : inquiry and applications / William P. Cunningham, Mary Ann Cunningham. - 4th ed. - New Delhi : Tata McGraw-Hill, 2008. - xviii, 428 p.
0070647720 (tata McGraw-Hill): 0071101942 (McGraw-Hill):
Environmental sciences.