Columbia subject headings:
Causation--Congresses.
Diffusion of innovations--Congresses.
Science and civilization--Congresses.
Science--Social aspects--History--Congresses.
Technological innovations--Congresses.
Harvard subject headings:
Causation--Congresses.
Diffusion of innovations--Congresses.
Science and civilization--Congresses
Science--Social aspects--History--Congresses.
Technological innovations--Congresses
Princeton subject headings: