Columbia subject headings:
Celts--Religion.
Irish literature--Middle Irish, 1100-1550--History and criticism.
Irish literature--To 1100--History and criticism.
Spirituality--Celtic Church.
Spirituality--Celtic countries.
Harvard subject headings:
Princeton subject headings:
Celts--Religion.
Irish literature--Middle Irish, 1100-1550--History and criticism.
Irish literature--To 1100--History and criticism.
Spirituality--Celtic Church.
Spirituality--Celtic countries.