Columbia subject headings:
Books on microfilm--Indexes.
English imprints--Indexes.
Harvard subject headings:
Books on microfilm--Indexes.
Early printed books--Great Britain--17th century--Microform catalogs--Indexes.
English imprints--Indexes.
English imprints--Microform catalogs--Indexes.
Great Britain--Imprints--Microform catalogs--Indexes.
Princeton subject headings: