Columbia subject headings:
Christian poetry, English (Middle)
Harvard subject headings:
Christian pilgrims and pilgrimages--Poetry.
Christian poetry, English (Middle)
Christian poetry, English (Middle)--Criticism, Textual.
Langland, William, 1330?-1400? Piers Plowman--Criticism, Textual.
Princeton subject headings:
Christian poetry, English (Middle)
Christian poetry, English (Middle)--Criticism, Textual.
Civilization, Medieval--14th century.
Langland, William, 1330?-1400? Piers Plowman--Criticism, Textual.