@book{209507,
	author = {Unesco.},
	title = {Trade barriers to knowledge : },
	publisher = {Greenwood Press, },
	year = {c1955.},
	address = {Westport, Conn. : },
	edition = {New and rev. ed.},
	note = {"Information on tariff and trade regulations was compiled by the Intelligence Unit of The Economist, London."}
}