Columbia subject headings:
Big business--Brazil--Congresses.
Science and state--Brazil--Congresses.
Technology and state--Brazil--Congresses.
Technology--Social aspects--Brazil--Congresses.
Harvard subject headings:
Social change.
Technology--Social aspects--Brazil.
Princeton subject headings:
Big business--Brazil--Congresses.
Science and state--Brazil--Congresses.
Technology and state--Brazil--Congresses.
Technology--Social aspects--Brazil--Congresses.