Free-floating subdivisions an alphabetical index

Library of Congress subject headings

Library of Congress subject headings

Library of Congress subject headings. free-floating subdivisions, genre/form headings, children's subject headings

Library of Congress classification. Q. Science

Library of Congress classification. T. Technology

On these walls inscriptions & quotations in the Library of Congress Por Cole, John Young 1940-

Library of Congress classification. DS-DX. History of Asia, Africa, Australia, New Zealand, etc.

Library of Congress classification. H. Social sciences

Library of Congress classification. J. Political science

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