Columbia subject headings:
Harvard subject headings:
Electric power consumption--Europe--Statistics--Periodicals.
Electric power consumption--North America--Statistics--Periodicals.
Electric utilities--Europe--Statistics--Periodicals.
Electric utilities--North America--Statistics--Periodicals.
Princeton subject headings:
Electric industries--Europe--Statistics--Periodicals.
Electric industries--North America--Statistics--Periodicals.
Electric power--Europe--Statistics--Periodicals.
Electric power--North America--Statistics--Periodicals.