Columbia subject headings:
Langland, William, 1330?-1400? Piers Plowman.
Langland, William, 1330?-1400?--Religion.
Theology in literature.
Theology, Doctrinal--History--Middle Ages, 600-1500.
Harvard subject headings:
Langland, William, 1330?-1400? Piers Plowman.
Langland, William, 1330?-1400?--Religion.
Theology in literature.
Theology, Doctrinal--History--Middle Ages, 600-1500.
Princeton subject headings:
Langland, William, 1330?-1400? Piers Plowman.