Columbia subject headings:
Harvard subject headings:
Economic forecasting--Congresses.
Economic history--1971-1990--Congresses
Population forecasting--Congresses.
Population--Congresses
Population--Economic aspects--Congresses
Princeton subject headings:
Economic forecasting--Congresses.
Economic history--1971-1990--Congresses.
Population forecasting--Congresses.
Population--Congresses.
Population--Economic aspects--Congresses.