Columbia subject headings:
Harvard subject headings:
Conflict management--Germany--Congresses.
Environmental policy--Germany--Congresses
Technological innovations--Environmental aspects--Germany--Congresses.
Technology and state--Germany--Congresses.
Technology--Environmental aspects--Germany--Congresses.
Princeton subject headings:
Conflict management--Germany--Congresses.
Environmental policy--Germany--Congresses.
Technological innovations--Environmental aspects--Germany--Congresses.
Technology and state--Germany--Congresses.
Technology--Environmental aspects--Germany--Congresses.