Columbia subject headings:
Harvard subject headings:
Carbon dioxide--Environmental aspects--Germany--Congresses.
Carbon sequestration--Germany--Congresses.
Carbon sequestration--Technological innovations--Germany--Congresses.
Climatic changes--Germany--Congresses.
Technology--Social aspects--Germany--Congresses.
Princeton subject headings:
Carbon dioxide mitigation--Germany--Congresses.
Carbon sequestration--Germany--Congresses.