Columbia subject headings:
Harvard subject headings:
Electric utilities--Mexico--Statistics--Periodicals.
Energy consumption--Mexico--Statistics--Periodicals.
Energy industries--Mexico--Statistics--Periodicals.
Petroleum industry and trade--Mexico--Statistics--Periodicals.
Princeton subject headings:
Electric utilities--Mexico--Statistics--Periodicals.
Energy consumption--Mexico--Statistics--Periodicals.
Energy industries--Mexico--Statistics--Periodicals.
Periodicals.
Petroleum industry and trade--Mexico--Statistics--Periodicals.
Statistics.