@book{29926,
	author = {Wolfe, Thomas Kennerly, and Kipps, Michael Smith,},
	title = {Production of field crops :},
	publisher = {McGraw-Hill,},
	year = {c1959.},
	series = {McGraw-Hill publications in the agricultural sciences [from old catalog]},
	address = {New York :},
	edition = {5th ed.}
}