Columbia subject headings:
Asia--Description and travel.
Mongols--History.
Polo, Marco, 1254-1323?
Voyages and travels.
Harvard subject headings:
Asia--Description and travel
Mongols--History
Voyages and travels
Princeton subject headings:
Asia--Description and travel--Early works to 1800.
Mongols--History--Early works to 1800.
Polo, Marco, 1254-1323?--Travel--Asia.
Voyages and travels--Early works to 1800.