Columbia subject headings:
Cistercians--England.
Langland, William, 1330?-1400? Piers Plowman.
Harvard subject headings:
Academic theses
Cistercians--England.
Langland, William, 1330?-1400? Piers Plowman
Princeton subject headings:
Cistercians--England.
Langland, William, 1330?-1400? Piers Plowman.