Columbia subject headings:
Chaucer, Geoffrey, -1400--Criticism and interpretation.
Chaucer, Geoffrey, -1400.
England--Civilization--1066-1485.
Harvard subject headings:
Chaucer, Geoffrey, -1400
Chaucer, Geoffrey, -1400--Criticism and interpretation.
Civilization, Medieval--14th century
England--Civilization--1066-1485
Princeton subject headings:
Chaucer, Geoffrey, -1400--Contemporary England.
Chaucer, Geoffrey, -1400--Criticism and interpretation.
England--Civilization--1066-1485.