Columbia subject headings:
Forest conservation--Government policy.
Wetland conservation--Government policy.
Harvard subject headings:
Environmental policy--OECD countries
Forest policy--OECD countries.
Forests and forestry--Economic aspects--OECD countries.
Wetland conservation--Economic aspects--OECD countries.
Wetland conservation--Government policy--OECD countries.
Wetland conservation--Law and legislation--OECD countries.
Princeton subject headings:
Forest conservation.
Land use, Rural.
Wetland conservation.