Columbia subject headings:
Chaucer, Geoffrey, -1400--Manuscripts.
Incunabula.
Manuscripts, English (Middle)
Harvard subject headings:
Chaucer, Geoffrey, -1400--Manuscripts.
Incunabula.
Manuscripts, English (Middle)
Princeton subject headings:
Chaucer, Geoffrey, -1400--Manuscripts.
Incunabula--England.
Manuscripts, English (Middle)
Manuscripts, Medieval--England.