Columbia subject headings:
Constitutional law--Mexico.
Eminent domain--Mexico.
Mexico--Foreign relations--United States.
Petroleum--Mexico.
United States--Foreign relations--Mexico.
Harvard subject headings:
Constitutional law--Mexico
Eminent domain--Mexico
Mexico--Foreign relations--United States.
Petroleum--Mexico
United States--Foreign relations--Mexico.
Princeton subject headings:
Eminent domain--Mexico.
Mexico--Constitutional law.
Mexico--Foreign relations--United States.
Petroleum--Mexico.
United States--Foreign relations--Mexico.