Columbia subject headings:
Guanajuato (Mexico : State)--Social conditions.
Harvard subject headings:
Foreign workers, Mexican--United States.
Guanajuato (Mexico : State)--Emigration and immigration.
Guanajuato (Mexico : State)--Social conditions.
United States--Emigration and immigration.
Princeton subject headings:
Guanajuato (Mexico)--Social conditions.
Immigrants--Mexico--Guanajuato.
Rural development--Mexico--Guanajuato.