Columbia subject headings:
Environmental economics--Congresses.
Organisation for Economic Co-operation and Development.
Subsidies--Congresses.
Sustainable development--Congresses.
Tax incentives--Congresses.
Harvard subject headings:
Princeton subject headings:
Environmental economics--Congresses.
Organisation for Economic Co-operation and Development.
Subsidies--Congresses.
Sustainable development--Congresses.
Tax incentives--Congresses.