Columbia subject headings:
Chaucer, Geoffrey, -1400--Knowledge and learning.
Chaucer, Geoffrey, -1400--Sources.
Education--England--History.
Incunabula.
Manuscripts--Facsimiles.
Textbooks--England.
Harvard subject headings:
Chaucer, Geoffrey, -1400--Knowledge and learning.
Chaucer, Geoffrey, -1400--Sources.
Education--England--History
Incunabula.
Manuscripts--Facsimiles
Textbooks--England.
Princeton subject headings:
Chaucer, Geoffrey, -1400--Knowledge and learning.
Chaucer, Geoffrey, -1400--Sources.
Education--England--History--To 1500.
Textbooks--England--History--To 1500.