@book{548280,
	author = {Schwab, Glenn Orville,},
	title = {Soil and water conservation engineering /},
	publisher = {Wiley,},
	year = {c1993.},
	address = {New York :},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/toc/onix02/92010953.html}
}