Columbia subject headings:
Harvard subject headings:
Chad--Foreign economic relations--China.
China National Petroleum Corporation International Chad.
China--Foreign economic relations--Chad.
International business enterprises--Africa.
International business enterprises--Chad,
Investments, Chinese--Africa.
Investments, Chinese--Chad.
Petroleum industry and trade--Africa.
Petroleum industry and trade--Chad.
Princeton subject headings:
Case studies.
Chad--Foreign economic relations--China.
China--Foreign economic relations--Chad.
Investments, Foreign--Africa--Case studies.
Petroleum industry and trade--Chad.
Petroleum industry and trade--Social aspects--Chad.
Zhongguo shi you tian ran qi zong gong si.