Columbia subject headings:
Corporación Estatal Petrolera Ecuatoriana.
Investments, Foreign--Ecuador.
Petroleum industry and trade--Government policy--Ecuador.
Petroleum law and legislation--Ecuador.
Harvard subject headings:
Corporación Estatal Petrolera Ecuatoriana.
Investments, Foreign--Ecuador.
Petroleum industry and trade--Government policy--Ecuador.
Petroleum law and legislation--Ecuador.
Princeton subject headings: