@book{3847,
	author = {Cunningham, William P. and Cunningham, Mary Ann},
	title = {Principles of environmental science :},
	publisher = {The McGraw-Hill Companies Inc.,},
	year = {2006.},
	address = {New York:},
	edition = {3rd ed.},
	note = {Includes bibliographical references, appendices, and index.}
}