@book{1370,
	title = {Environmental control seminar proceedings, Rotterdam, Warsaw, Bucharest, May 25-June 4, 1971.},
	publisher = {Bureau of International Commerce; for sale by the Supt. of Docs., U.S. Govt. Print. Off.,},
	year = {1971.},
	address = {Washington,},
	note = {"A United States Department of Commerce publication."}
}