Columbia subject headings:
Early printed books--Catalogs.
English imprints--Catalogs.
Incunabula--Bibliography--Catalogs.
Harvard subject headings:
Cambridge University Library--Catalogs.
Early printed books--Catalogs.
English imprints--Catalogs
Great Britain--Imprints--Catalogs.
Incunabula--Bibliography--Catalogs.
Princeton subject headings:
Catalogs.
Early printed books--Catalogs.
English imprints--Catalogs.
Incunabula--Bibliography--Catalogs.