Columbia subject headings:
Labor unions--Trinidad and Tobago.
Oilfields Workers' Trade Union.
Trinidad and Tobago--Politics and government.
Weekes, George.
Harvard subject headings:
Oilfields Workers' Trade Union--History.
Petroleum workers--Labor unions--Trinidad and Tobago.
Trinidad and Tobago--Politics and government.
Weekes, George.
Princeton subject headings:
Labor unions--Trinidad and Tobago.
Oilfields Workers' Trade Union.
Trinidad and Tobago--Politics and government.
Weekes, George.