Classification :
Library of Congress Subject Cataloging Division
Classification : Class H : Social sciences. - 3rd ed. - Washington : Govt. print. off, 1950. - 613 p.
Classification--Books--General works
Classification--Books--Social sciences
Classification, Library of Congress
Classification : Class H : Social sciences. - 3rd ed. - Washington : Govt. print. off, 1950. - 613 p.
Classification--Books--General works
Classification--Books--Social sciences
Classification, Library of Congress