Columbia subject headings:
Church history--Middle Ages, 600-1500.
Meersseman, G. G. (Gilles Gérard), 1903-1998--Bibliography.
Harvard subject headings:
Church history--Middle Ages, 600-1500
Church history--Middle Ages, 600-1500.
Meersseman, G. G. (Gilles Gérard), 1903---Bibliography.
Meersseman, G. G. (Gilles Gérard), 1903-1998--Bibliography.
Princeton subject headings:
Church history--Middle Ages.
Meersseman, G. G. (Gilles Gérard), 1903-1998--Bibliography.