@book{4534,
	author = {Cunningham, William P. and Cunningham, Mary Ann.},
	title = {Principles of environmental science :},
	publisher = {McGraw-Hill Higher Education ;},
	year = {c2004 [reprinted 2004].},
	address = {Boston :},
	edition = {2nd ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/mh031/2002151069.html}
}