Columbia subject headings:
Harvard subject headings:
Discourse analysis--Congresses.
Science and civilization--Congresses
Science--Forecasting--Congresses.
Science--History--Congresses
Science--Social aspects--Congresses
Princeton subject headings:
Discourse analysis--Congresses.
Science and civilization--Congresses.
Science--Forecasting--Congresses.
Science--History--Congresses.
Science--Social aspects--Congresses.