Columbia subject headings:
Civil rights--Congresses.
State, The--Congresses.
Technology--Philosophy--Congresses.
Technology--Social aspects--Congresses.
Harvard subject headings:
Civil rights--Congresses
State, The--Congresses
Technology--Philosophy--Congresses
Technology--Social aspects--Congresses
Princeton subject headings:
Civil rights--Congresses.
State, The--Congresses.
Technology--Philosophy--Congresses.
Technology--Social aspects--Congresses.