Columbia subject headings:
Harvard subject headings:
Arthur, King--Bibliography.
Arthur, King--Dictionaries, indexes, etc.
Arthurian romances--Bibliography.
Arthurian romances--Dictionaries.
Great Britain--Antiquities, Celtic--Encyclopedias.
Great Britain--History--To 1066--Encyclopedias.
Princeton subject headings:
Arthur, King--Bibliography.
Arthur, King--Dictionaries, indexes, etc.
Arthurian romances--Bibliography.
Arthurian romances--Dictionaries.