@book{6434,
	author = {Vallentine, John F.},
	title = {Range development and improvements /},
	publisher = {Academic Press,},
	year = {c1989.},
	address = {San Diego :},
	edition = {3rd ed.},
	note = {Includes indexes.},
	url = {http://www.loc.gov/catdir/description/els032/88030791.html}
}