Columbia subject headings:
Abbeys--Europe--History--Sources.
Abbots--France--Biography.
Church history--10th century--Sources.
Church history--11th century--Sources.
Guglielmo, da Volpiano, Saint, 962-1031.
Monasticism and religious orders--Europe--History--Middle Ages, 600-1500--Sources.
Harvard subject headings:
Abbeys--Europe--History--Sources.
Abbots--France--Biography.
Church history--10th century--Sources.
Church history--11th century--Sources.
Guglielmo, da Volpiano.
Monasticism and religious orders--Europe--History--Middle Ages, 600-1500--Sources.
Princeton subject headings:
Abbeys--Europe--History--Sources.
Abbots--France--Biography.
Church history--10th century--Sources.
Church history--11th century--Sources.
Guglielmo, da Volpiano, Saint, 962-1031.
Monasticism and religious orders--Europe--History--Middle Ages, 600-1500--Sources.