Columbia subject headings:
Harvard subject headings:
Social sciences--Reference books--Bibliography
Social sciences--United States--Bibliography of bibliographies.
Social sciences--United States--Bibliography.
Social sciences--United States--Databases--Directories.
Social sciences--United States--Information services--Directories.
Social sciences--United States--Information services--United States--Directories.
United States--Imprints.
Princeton subject headings:
Reference books--Social sciences--Bibliography.
Social sciences--United States--Bibliography.
Social sciences--United States--Data bases--Directories.
Social sciences--United States--Information Services--United States--Directories.
United States--Imprints.