Columbia subject headings:
Climatic changes--Congresses.
Energy conservation--Technological innovations--Congresses.
Environmental engineering--Technological innovations--Congresses.
Global warming--Prevention--International cooperation--Congresses.
Global warming--Prevention--Technological innovations--Congresses.
Harvard subject headings:
Princeton subject headings:
Climatic changes--Congresses.
Energy conservation--Technological innovations--Congresses.
Environmental engineering--Technological innovations--Congresses.
Global warming--Prevention--International cooperation--Congresses.