Columbia subject headings:
Environmental impact analysis--Mexico, Gulf of.
Oil and gas leases--Mexico, Gulf of.
Petroleum in submerged lands--Mexico, Gulf of.
Harvard subject headings:
Environmental impact analysis--Mexico, Gulf of.
Oil and gas leases--Mexico, Gulf of.
Petroleum in submerged lands--Mexico, Gulf of.
Princeton subject headings:
Environmental impact analysis--Mexico, Gulf of.
Oil and gas leases--Mexico, Gulf of.
Petroleum in submerged lands--Mexico, Gulf of.