Columbia subject headings:
Environmental law--Switzerland.
Environmental protection--Switzerland.
Pollution--Law and legislation--Switzerland.
Pollution--Switzerland.
Refuse and refuse disposal--Law and legislation--Switzerland.
Refuse and refuse disposal--Switzerland.
Harvard subject headings:
Environmental law--Switzerland
Environmental protection--Switzerland.
Pollution--Law and legislation--Switzerland.
Pollution--Switzerland.
Refuse and refuse disposal--Law and legislation--Switzerland.
Refuse and refuse disposal--Switzerland.
Princeton subject headings: