Columbia subject headings:
Agriculture and state--Periodicals.
Agriculture--Economic aspects--Forecasting--Periodicals.
Agriculture--Economic aspects--Statistics--Periodicals.
Harvard subject headings:
Agriculture and state--Periodicals.
Agriculture--Economic aspects--Forecasting--Periodicals.
Agriculture--Economic aspects--Statistics--Periodicals.
Princeton subject headings:
Agriculture and state--Periodicals.
Agriculture--Economic aspects--Forecasting--Periodicals.
Agriculture--Economic aspects--Statistics--Periodicals.
Periodicals.
Statistics.