Columbia subject headings:
Petroleum industry and trade--Military aspects--History--20th century.
World War, 1939-1945--Fuel supplies.
Harvard subject headings:
Petroleum industry and trade--Military aspects--History--20th century.
World War, 1939-1945--Fuel supplies.
Princeton subject headings:
Petroleum industry and trade--Military aspects--History--20th century.
World War, 1939-1945--Fuel supplies.