@book{212099,
	author = {Library of Congress. and Library of Congress.},
	title = {Library of Congress classification. Z. Bibliography. Library science. Information resources},
	publisher = {Library of Congress, Cataloging Distribution Service},
	year = {2009.},
	address = {Washington, D.C.},
	edition = {[2009 ed.].},
	note = {"This edition cumulates all additions and changes to Class Z through Weekly list 2009/21, dated May 27, 2009. Additions and changes made subsequent to that date are published in weekly lists posted on the World Wide Web ... and are also available in Classification Web, the online Web-based edition of the Library of Congress Classification"--T.p. verso.}
}