Columbia subject headings:
Harvard subject headings:
Environmental protection--Cost effectiveness--Case studies.
Pollution control industry--Cost effectiveness--Case studies.
Pollution prevention--Economic aspects--Case studies.
Pollution--Economic aspects--Case studies.
Waste minimization--Cost effectiveness--Case studies.
Princeton subject headings:
Environmental protection--Cost effectiveness--Case studies.
Pollution control industry--Cost effectiveness--Case studies.
Pollution--Economic aspects--Case studies.