Columbia subject headings:
Colorado River (Colo.-Mexico)
International rivers.
Irrigation.
Rio Grande River.
Tijuana River.
Harvard subject headings:
Colorado River (Colo.-Mexico)--Water rights.
International rivers--Law and legislation--Mexico.
International rivers--Law and legislation--United States.
Mexico--Foreign relations--United States
Rio Grande (Colo.-Mexico and Tex.)--Water rights.
Tijuana River (Mexico and Calif.)--Water rights.
United States--Foreign relations--Mexico
Princeton subject headings: