Columbia subject headings:
Harvard subject headings:
Aquiles Serdán (Chihuahua, Mexico)--Social conditions.
Silver mines and mining--Mexico--Santa Eulalia (Chihuahua)
Princeton subject headings:
Aquiles Serdán (Mexico)--Economic conditions.
Aquiles Serdán (Mexico)--Social conditions.
Chihuahua (Mexico : State)--History.
Silver mines and mining--Mexico--Aquiles Serdán.