一般注記First ed. published in 1910 by the Classification Division of the Library of Congress.
Kept up to date by the Division's L.C. classification--additions and changes, and by three publications irregularly issued by Gale Research Company entitled: Library of Congress classification schedules--a cumulation of additions and changes, Class V; Library of Congress classification schedules--a cumulation of additions and changes, Classes U-V, Military and naval sciences (which updates also Class U, Military science) ; and Library of Congress classification schedules combined with additions and changes.