Columbia subject headings:
Cuba--History--1959-1990.
Guevara, Che, 1928-1967.
Sugar--Manufacture and refining.
Sugarcane--Cuba.
Harvard subject headings:
Cuba--Economic conditions--1959-1990.
Cuba--Economic conditions--1990-
Guevara, Che, 1928-1967--Career in agriculture.
Sugarcane--Harvesting--Cuba.
Sugarcane--Harvesting--Machinery--Cuba.
Princeton subject headings:
Cuba--History--Revolution, 1959.
Guevara, Che, 1928-1967.