Outline of the Library of Congress Classification
Library of Congress Subject Cataloging Division
Outline of the Library of Congress Classification - Washington : Govt. print. off, 1942 (reprinted 1951). - 21 p.
Revised and enlarged edition of "Outline Scheme of Classes"
Library of Congress
Classification, Library of Congress
Outline of the Library of Congress Classification - Washington : Govt. print. off, 1942 (reprinted 1951). - 21 p.
Revised and enlarged edition of "Outline Scheme of Classes"
Library of Congress
Classification, Library of Congress