Library of Congress classification. U-V. Military science. Naval science (Library of Congress, Cataloging Distribution Service, 2008)
"This edition cumulates all additions and changes to classes U-V through Weekly list 2008/16, dated April 16, 2008. 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