Library of Congress creator Library of Congress Policy and Standards Division text dcu Washington, D.C Library of Congress, Cataloging Distribution Service 2009 [2009 ed.]. monographic eng x, 679 p. 27 cm. prepared by the Policy and Standards Division, Library of Congress. "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. Includes index. Classification, Library of Congress Classification Books Information resources Classification Books Library science Classification Books Bibliography Z696.U5Z 2009 9780844412320 2009024436 PUCPR 090612 20160527202602.0 292409