Columbia subject headings:
England--Social life and customs.
Langland, William, 1330?-1400? Piers Plowman.
Harvard subject headings:
England--Social life and customs.
Langland, William, 1330?-1400?
Langland, William, 1330?-1400? Piers Plowman.
Princeton subject headings:
England--Social life and customs.
Langland, William, 1330?-1400? Piers Plowman.