Library of Congress subject headings. Supplementary vocabularies free-floating subdivisions, genre/form headings, children's subject headings - United States. Library of Congress. Policy and Standards Division (Washington, D.C. Library of Congress, Cataloging Distribution Service, 2009)
Keywords: Library of Congress. -- Policy and Standards Division -- Periodicals; Subject headings, Library of Congress -- Periodicals; Subject heading subdivisions -- Periodicals; Form headings -- Periodicals; Subject headings -- Children's literature -- Periodicals