Columbia subject headings:
Conflict of laws--Contracts--Egypt.
Conflict of laws--Contracts--France.
Petroleum industry and trade--Egypt.
Petroleum law and legislation--France.
Harvard subject headings:
Conflict of laws--Contracts--Egypt.
Conflict of laws--Contracts--France.
Oil and gas leases
Oil and gas leases--Egypt.
Oil and gas leases--France.
Petroleum law and legislation
Petroleum law and legislation--Egypt.
Petroleum law and legislation--France.
Princeton subject headings: