Columbia subject headings:
Harvard subject headings:
Cyril, Saint, Apostle of the Slavs, approximately 827-869--Anniversaries, etc.
Cyril, Saint, Apostle of the Slavs, approximately 827-869.
Czech Republic--Church history.
Methodius, Saint, Apostle of the Slavs, approximately 825-884 or 885--Anniversaries, etc.
Methodius, Saint, Apostle of the Slavs, approximately 825-884 or 885.
Princeton subject headings:
Cyril, Saint, Apostle of the Slavs, approximately 827-869.
Czech Republic--Church history.
Methodius, Saint, Apostle of the Slavs, approximately 825-884 or 885.