"This edition cumulates all additions and changes to Class T through Weekly list 2006/49, dated December 6, 2006. Additions and changes made subsequen...
"This edition cumulates all additions and changes to Class T through Weekly list 2006/49, dated December 6, 2006. 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.