Columbia subject headings:
Aeronautics, Commercial--Law and legislation--Switzerland.
Conflict of laws--Liability for environmental damages--Austria.
Conflict of laws--Liability for environmental damages--Germany.
Conflict of laws--Liability for environmental damages--Switzerland.
Emissions trading--Law and legislation--Switzerland.
Harvard subject headings:
Aeronautics, Commercial--Law and legislation--Switzerland.
Conflict of laws--Liability for enviromental damages--Germany.
Conflict of laws--Liability for environmental damages--Austria.
Conflict of laws--Liability for environmental damages--Switzerland.
Emissions trading--Law and legislation--Switzerland.
Princeton subject headings: