Library of Congress subject headings /

Eitemau Tebyg

• Library of Congress subject headings/
  gan: Library of Congress. Subject Cataloging Division
  Cyhoeddwyd: (1990)
• Library of Congress subject headings /
  gan: Library of Congress. Subject Cataloging Division
  Cyhoeddwyd: (1980)
• Library of Congress subject headings /
  gan: Library of Congress. Office for Subject Cataloging Policy
  Cyhoeddwyd: (1992)
• Library of Congress subject headings /
  gan: Library of Congress. Cataloging Policy and Support Office
  Cyhoeddwyd: (2007)
• Library of Congress subject headings /
  gan: Library of Congress. Cataloging Policy and Support Office. Library Services
  Cyhoeddwyd: (2003)