Columbia subject headings:
Agriculture--Economic aspects--United States--States--Statistics--Computer programs--Handbooks, manuals, etc.
Agriculture--United States--States--Statistics--Computer programs--Handbooks, manuals, etc.
Harvard subject headings:
Agriculture--Economic aspects--United States--Statistics--Databases.
Agriculture--United States--Statistics--Databases.
Princeton subject headings:
Agriculture--Economic aspects--United States--States--Statistics--Computer programs--Handbooks, manuals, etc.
Agriculture--United States--States--Statistics--Computer programs--Handbooks, manuals, etc.