@book{12305,
	author = {Dill, Henry W.},
	title = {Worldwide use of airphotos in agriculture},
	publisher = {Economic Research Service, U.S. Dept. of Agriculture; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.,},
	year = {1967]},
	series = {[United States. Dept. of Agriculture] Agriculture handbook ;},
	address = {Washington]}
}