Columbia subject headings:
Agriculture--Economic aspects--Mexico--Oaxaca Valley--Case studies.
Oaxaca Valley (Mexico)--Politics and government--Case studies.
Oaxaca Valley (Mexico)--Rural conditions--Case studies.
Harvard subject headings:
Agriculture--Economic aspects--Mexico--Oaxaca Valley--Case studies.
Oaxaca Valley (Mexico)--Politics and government--Case studies.
Oaxaca Valley (Mexico)--Rural conditions--Case studies.
Princeton subject headings:
Agriculture--Economic aspects--Mexico--Oaxaca Valley--Case studies.
Oaxaca Valley (Mexico)--Politics and government--Case studies.
Oaxaca Valley (Mexico)--Rural conditions--Case studies.