Columbia subject headings:
Sugarcane industry--Cuba--History.
Sugarcane--Processing--Cuba--History.
Harvard subject headings:
Sugar trade--Cuba--History.
Sugar--Manufacture and refining--Cuba--History.
Sugarcane industry--Cuba--History.
Sugarcane--Processing--Cuba--History.
Princeton subject headings:
Sugar trade--Cuba--History.
Sugar--Manufacture and refining--Cuba--History.