Columbia subject headings:
Computers and civilization--Congresses.
Human ecology--Congresses.
Science and civilization--Congresses.
Technology and civilization--Congresses.
Harvard subject headings:
Computers and civilization--Congresses
Human ecology--Congresses
Science and civilization--Congresses
Technology and civilization--Congresses
Princeton subject headings:
Computers and civilization--Congresses.
Human ecology--Congresses.
Science and civilization--Congresses.
Technology and civilization--Congresses.