Columbia subject headings:
Alternative agriculture--Government policy--United States.
Land use, Rural--United States--Planning.
Sustainable agriculture--Government policy--United States.
Harvard subject headings:
Alternative agriculture--Government policy--United States.
Land use, Rural--United States--Planning.
Sustainable agriculture--Government policy--United States.
Princeton subject headings:
Alternative agriculture--Government policy--United States.
Land use, Rural--United States--Planning.
Sustainable agriculture--Government policy--United States.