Columbia subject headings:
Coalición de los Ejidos Colectivos de los Valles del Yaqui y Mayo.
Mexico--Rural conditions.
Peasants--Mexico--Mayo River Valley--Societies, etc.
Peasants--Mexico--Sonora (State)--Societies, etc.
Peasants--Mexico--Yaqui River Valley--Societies, etc.
Harvard subject headings:
Coalición de los Ejidos Colectivos de los Valles del Yaqui y Mayo.
Mexico--Rural conditions.
Peasants--Mexico--Mayo River Valley--Societies, etc.
Peasants--Mexico--Sonora (State)--Societies, etc.
Peasants--Mexico--Yaqui River Valley--Societies, etc.
Princeton subject headings:
Agriculture, Cooperative--Mexico--Yaqui Valley.
Ejidos--Mexico--Yaqui Valley.
Land reform--Mexico--Yaqui Valley.
Land tenure--Mexico--Yaqui Valley.
Yaqui River Valley (Mexico)--Rural conditions.