Columbia subject headings:
Electric industries--Mexico, North--History.
Electrification--Economic aspects--Mexico, North--History.
Harvard subject headings:
Electric industries--Mexico, North--History.
Electric power production--Mexico, North--History.
Electrification--Economic aspects--Mexico, North--History.
Electrification--Mexico, North--History.
Mexico, North--Economic conditions.
Princeton subject headings:
Electric power production--Mexico, North--History.
Electrification--Mexico, North--History.
Mexico, North--Economic conditions.