Columbia subject headings:
Harvard subject headings:
Arthurian romances--Bibliography--Catalogs.
Britons--Kings and rulers--Legends--Bibliography--Catalogs.
Great Britain--Antiquities, Celtic--Bibliography--Catalogs.
Great Britain--History--To 1066--Bibliography--Catalogs.
Princeton subject headings:
Arthur, King--Bibliography.
Clwyd County Library--Catalogs.