Columbia subject headings:
San Juan y San Pablo de Peñafiel (Convent)
Harvard subject headings:
Monasticism and religious orders--Spain--History--Middle Ages, 600-1500.
Peñafiel (Spain)--Church history.
Peñafiel (Spain)--Economic conditions.
San Juan y San Pablo de Peñafiel (Convent)
San Juan y San Pablo de Peñafiel--History.
Princeton subject headings:
San Juan y San Pablo de Peñafiel (Convent)--History.