Columbia subject headings:
Harvard subject headings:
Power resources--Abstracts--Periodicals.
Power resources--Bibliography--Periodicals.
Power resources--Indexes--Periodicals.
Power resources--United States--Statistics--Periodicals.
Princeton subject headings:
Periodicals.
Power resources--Abstracts--Periodicals.
Power resources--Bibliography--Periodicals.
Power resources--Indexes--Periodicals.
Power resources--United States--Statistics--Periodicals.
Statistics.