Columbia subject headings:
Harvard subject headings:
Dolphins--Law and legislation--United States.
Dolphins--Mortality.
Tuna fisheries--Environmental aspects.
Tuna industry--Law and legislation--United States.
Princeton subject headings:
Dolphins--Law and legislation--United States.
Dolphins--Pacific Ocean--Mortality.
Tuna fisheries--Pacific Ocean.
Tuna industry--Law and legislation--United States.