Columbia subject headings:
Chaucer, Geoffrey, -1400--Knowledge--Italy.
Diplomats--England--Biography.
Diplomats--Italy--Biography.
Italy--Description and travel--Early works to 1800.
Poets, English--Middle English, 1100-1500--Biography.
Harvard subject headings:
Chaucer, Geoffrey, -1400--Knowledge--Italy.
Diplomats--England--Biography.
Diplomats--Italy--Biography
Italy--Description and travel--Early works to 1800.
Poets, English--Middle English, 1100-1500--Biography
Princeton subject headings: