@book{11577,
	author = {Clausen, Curtis P.},
	title = {Biological control of insect pests in the continental United States /},
	publisher = {U.S. Dept. of Agriculture,},
	year = {1956.},
	series = {Technical bulletin / United States Department of Agriculture ;},
	address = {Washington :},
	note = {Includes index.}
}