Columbia subject headings:
Harvard subject headings:
Acid rain--Research--United States--Evaluation.
Environmental policy--Research--United States.
Environmental sciences--Research--Evaluation--Case studies.
Environmental sciences--Research--Evaluation.
Expertise
National Acid Precipitation Assessment Program (U.S.)
Ozone layer depletion--Research--Evaluation.
Research--Evaluation
Sea level--Research--Antarctica--Evaluation.
Princeton subject headings:
Acid rain--Research--United States--Evaluation.
Case studies.
Environmental policy--Research--United States.
Environmental sciences--Research--Evaluation--Case studies.
Environmental sciences--Research--Evaluation.
Expertise.
National Acid Precipitation Assessment Program (U.S.)
Ozone layer depletion--Research--Evaluation.
Research--Evaluation.
Sea level--Research--Antarctica--Evaluation.