Columbia subject headings:
Christian literature, Welsh--History and criticism.
Welsh literature--To 1550--History and criticism.
Harvard subject headings:
Christian literature, Welsh--History and criticism.
Religious literature, Welsh--History and criticism.
Wales--In literature.
Wales--Intellectual life--16th century.
Wales--Intellectual life--To 1500.
Welsh literature--To 1550--History and criticism.
Princeton subject headings:
Religious literature--History and criticism.
Welsh literature--To 1550--History and criticism.