@book{9947,
	author = {Strowbridge, John William,},
	title = {Origin and distribution of the commercial potato crop,},
	publisher = {U.S. Govt. Print. off.,},
	year = {1939]},
	series = {United States. Dept. of agriculture. Technical bulletin ;},
	address = {[Washington,},
	note = {Caption title.}
}