Columbia subject headings:
Economic forecasting--Periodicals.
Economic indicators--Periodicals.
Environmental indicators--Periodicals.
Social indicators--Periodicals.
Social prediction--Periodicals.
Harvard subject headings:
Economic forecasting--Periodicals
Economic indicators--Periodicals
Environmental indicators--Periodicals.
Social indicators--Periodicals
Social prediction--Periodicals.
Princeton subject headings:
Economic indicators--Periodicals.
Environmental indicators--Periodicals.
Periodicals.
Social indicators--Periodicals.