@book{10204,
	author = {Clark, J. Allen and Bayles, B. B.},
	title = {Classification of wheat varieties grown in the United States in 1939 /},
	publisher = {U.S. Dept. of Agriculture,},
	year = {1942.},
	series = {Technical bulletin / United States Department of Agriculture ;},
	address = {Washington :},
	note = {Cover title.}
}