@book{212203,
	author = {Library of Congress. and Library of Congress.},
	title = {Subject headings used in the Dictionary catalogs of the Library of Congress, January 1959- December 1960, Supplement to the 6th edition /},
	publisher = {G.P.O., Library Branch,},
	year = {1961.},
	address = {Washington :},
	edition = {6th ed.},
	note = {Some issues have title: Subject headings used in the dictionary catalogs of the Library of Congress.}
}