Columbia subject headings:
Columbia River Watershed--Statistics--Periodicals.
Electric power--Northwest, Pacific--Statistics--Periodicals.
Electric utilities--Northwest, Pacific--Statistics--Periodicals.
United States. Bonneville Power Administration--Statistics--Periodicals.
Harvard subject headings:
Columbia River Watershed--Statistics--Periodicals.
Electric power--Northwest, Pacific--Statistics--Periodicals.
Electric utilities--Northwest, Pacific--Statistics--Periodicals.
United States. Bonneville Power Administration--Statistics--Periodicals.
Princeton subject headings:
Columbia River Watershed--Statistics--Periodicals.
Electric power--Northwest, Pacific--Statistics--Periodicals.
Electric utilities--Northwest, Pacific--Statistics--Periodicals.
United States. Bonneville Power Administration--Statistics--Periodicals.