Columbia subject headings:
Derivative securities--Law and legislation--Europe.
Derivative securities--Law and legislation--Germany.
Electric utilities--Law and legislation--Europe.
Electric utilities--Law and legislation--Germany.
Energy industries--Law and legislation--Europe.
Energy industries--Law and legislation--Germany.
Harvard subject headings:
Derivative securities--Law and legislation--Europe.
Derivative securities--Law and legislation--Germany.
Electric utilities--Law and legislation--Europe.
Electric utilities--Law and legislation--Germany.
Energy industries--Law and legislation--Europe.
Energy industries--Law and legislation--Germany
Princeton subject headings: