Columbia subject headings:
Environmental policy--Europe.
Europe--Politics and government--1945-
Grünen (Political party)
Political parties--Europe.
Harvard subject headings:
Environmental policy--Europe
Europe--Politics and government--1945-
Grünen (Political party)
Political parties--Europe
Princeton subject headings:
Environmental policy--Europe.
Europe--Politics and government--1945-
Grünen (Political party)
Political parties--Europe.