Columbia subject headings:
Bibliography--Photomechanical editions--Catalogs.
Books of microfilm--Bibliography--Catalogs.
Out-of-print books--Bibliography--Catalogs.
Harvard subject headings:
Princeton subject headings:
Books on microfilm--Bibliography--Catalogs.
Catalogs.
On-demand reprints (Publications)--Bibliography--Catalogs.
Out-of-print books--Bibliography--Catalogs.
University Microfilms International--Catalogs.