Columbia subject headings:
Agriculture and state.
Sustainable agriculture--Chile--Case studies.
Sustainable agriculture--India--Case studies.
Sustainable agriculture--Philippines--Case studies.
Sustainable agriculture--United States--Case studies.
Harvard subject headings:
Agriculture and state.
Sustainable agriculture--Chile--Case studies.
Sustainable agriculture--India--Case studies.
Sustainable agriculture--Philippines--Case studies.
Sustainable agriculture--United States--Case studies.
Princeton subject headings:
Agriculture and state.
Sustainable agriculture--Chile--Case studies.
Sustainable agriculture--India--Case studies.
Sustainable agriculture--Philippines--Case studies.
Sustainable agriculture--United States--Case studies.