Columbia subject headings:
Harvard subject headings:
Economic development--Environmental aspects--Germany.
Energy consumption--Germany.
Energy policy--Germany
Environmental economics--Germany.
Helmholtz-Allianz Energy-Trans.
Princeton subject headings:
Climatic changes.
Energy policy--European Union countries.
Energy policy--Germany.
Helmholtz-Allianz Energy-Trans (Germany)
Renewable energy sources--Government policy--Germany.
Sustainable development--European Union countries.
Sustainable development--German.