Columbia subject headings:
Harvard subject headings:
All American Canal (Calif.)
All-American Canal System (U.S.)
Colorado River (Colo.-Mexico)
Irrigation canals and flumes--Linings--California--Imperial County.
Irrigation--Mexico--Mexicali Valley.
Water resources development--Mexican-American Border Region.
Water-supply--California--Imperial County.
Water-supply--Mexican-American Border Region.
Water-supply--Mexico--Mexicali Valley.
Princeton subject headings:
All-American Canal System (U.S.)
Water resources development--Mexican-American Border Region.
Water-supply--Mexican-American Border Region.