Columbia subject headings:
Agriculture--Economic aspects--Bibliography--Catalogs--Periodicals.
Agriculture--Economic aspects--United States--Bibliography--Catalogs--Periodicals.
Government publications--United States--Bibliography--Catalogs--Periodicals.
United States. Department of Agriculture. Economic Research Service--Bibliography--Catalogs--Periodicals.
United States. National Agricultural Statistics Service--Bibliography--Catalogs--Periodicals.
Harvard subject headings:
Agriculture--Economic aspects--Bibliography--Catalogs.
Agriculture--Economic aspects--United States--Bibliography--Catalogs.
Government publications--United States--Bibliography--Catalogs.
United States. Department of Agriculture. Economic Research Service--Bibliography--Catalogs.
United States. National Agricultural Statistics Service--Bibliography--Catalogs.
Princeton subject headings: