Columbia subject headings:
Agriculture--Economic aspects--United States--Periodicals.
Rural development--United States--Periodicals.
United States--Rural conditions--Periodicals.
Harvard subject headings:
Agriculture--Economic aspects--United States--Periodicals
Rural development--United States--Periodicals.
United States--Rural conditions--Periodicals.
Princeton subject headings:
Agriculture--Economic aspects--United States--Periodicals.
Periodicals.
Rural development--United States--Periodicals.
United States--Rural conditions--Periodicals.