Columbia subject headings:
Gas industry--Libya--History.
Libya--Economic conditions.
Libya--Politics and government--1951-1969.
Libya--Politics and government--1969-2011.
Petroleum industry and trade--Libya--History.
Harvard subject headings:
Gas industry--Libya--History.
Libya--Economic conditions.
Libya--Politics and government--1951-1969.
Libya--Politics and government--1969-2011
Petroleum industry and trade--Libya--History.
Princeton subject headings:
Energy policy--Libya.
Gas industry--Libya.
Libya--Economic conditions.
Petroleum industry and trade--Libya.
Power resources--Libya.