Columbia subject headings:
Harvard subject headings:
Energy policy--Austria.
Energy policy--Germany
Power resources--Austria.
Power resources--Germany.
Regional planning--Austria.
Regional planning--Germany
Renewable energy sources--Austria.
Renewable energy sources--Germany.
Princeton subject headings:
Energy policy--Austria.
Energy policy--Germany.
Power resources--Austria.
Power resources--Germany.
Regional planning--Austria.
Regional planning--Germany.
Renewable energy sources--Austria.
Renewable energy sources--Germany.