Columbia subject headings:
Library of Congress. Humanities and Social Sciences Division--Microform catalogs.
Microforms--Catalogs.
Harvard subject headings:
Library of Congress. Humanities and Social Sciences Division--Microform catalogs.
Microforms--Catalogs.
Princeton subject headings:
Catalogs.
Library of Congress. Humanities and Social Sciences Division--Microform catalogs.
Microforms--Catalogs.