Cunningham, William P. Environmental science : a global concern / William P. Cunningham and Mary Ann Cunningham - 12th ed. - New York : McGraw-Hill Companies, Inc., c2012. - xxiii, 613 p. : ill., maps. ; 30 cm. ISBN: 9780071314954 LCCN: Subjects--Topical Terms: Environmental sciencesTextbooks LC Class. No.: GE105 / .C86 2012