Columbia subject headings:
California--Economic conditions--20th century.
California--Economic conditions--21st century.
Charities--California--Central Valley (Valley)--Case studies.
Farmers--California--Central Valley (Valley)
Immigrants--California--Central Valley (Valley)
Poverty--California--Central Valley (Valley)
Harvard subject headings:
California--Economic conditions--20th century.
California--Economic conditions--21st century.
Charities--California--Central Valley (Valley)--Case studies.
Farmers--California--Central Valley (Valley)
Immigrants--California--Central Valley (Valley)
Poverty--California--Central Valley (Valley)
Princeton subject headings:
California--Economic conditions--20th century.
California--Economic conditions--21st century.
Case studies.
Charities--California--Central Valley (Valley)--Case studies.
Farmers--California--Central Valley (Valley).
Immigrants--California--Central Valley (Valley).
Poverty--California--Central Valley (Valley).