Columbia subject headings:
Electric power--New York (State)
Electric utilities--New York (State)
Saint Lawrence River--Commerce.
Saint Lawrence River--Navigation.
Saint Lawrence River--Power utilization.
Saint Lawrence Seaway--Commerce--Periodicals.
Saint Lawrence Seaway--Navigation--Periodicals.
Saint Lawrence Seaway--Power utilization--Periodicals.
Harvard subject headings:
Electric power--New York (State)--Periodicals.
Electric utilities--New York (State)--Periodicals.
Power Authority of the State of New York--Periodicals.
Saint Lawrence Seaway--Commerce--Periodicals.
Saint Lawrence Seaway--Navigation--Periodicals.
Saint Lawrence Seaway--Power utilization--Periodicals.
Princeton subject headings:
Periodicals.
Saint Lawrence Seaway--Commerce--Periodicals.
Saint Lawrence Seaway--Navigation--Periodicals.
Saint Lawrence Seaway--Power utilization--Periodicals.