@book{4110,
	author = {Botzler, Richard George,},
	title = {Environmental ethics :},
	publisher = {McGraw-Hill,},
	year = {c1998.},
	address = {Boston, Mass. :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/description/mh022/97005654.html}
}