Columbia subject headings:
Air--Pollution--Law and legislation--Germany (West)
Air--Pollution--Standards--Germany (West)
Industrial laws and legislation--Germany (West)
Technology and law.
Harvard subject headings:
Air--Pollution--Law and legislation--Germany (West)
Air--Pollution--Standards--Germany (West)
Environmental protection--Germany--History.
Industrial laws and legislation--Germany (West)
Industrial laws and legislation--Germany--History.
Pollution--Law and legislation--Germany--History.
Technology and law.
Princeton subject headings:
Environmental protection--Germany--History.
Industrial laws and legislation--Germany--History.
Pollution--Law and legislation--Germany--History.