@book{11940,
	author = {Butt, B. A. and Keller, John C.,},
	title = {Materials evaluated as insecticides and acaricides at Brownsville, Tex., September 1955 to June 1961 /},
	publisher = {Agricultural Research Service, U.S. Dept. of Agriculture,},
	year = {1964.},
	series = {Agriculture handbook / United States Department of Agriculture ;},
	address = {Washington, D.C. :},
	note = {Includes indexes.}
}