Columbia subject headings:
Harvard subject headings:
Manganese mines and mining--Environmental aspects--Mexico--Molango (Hidalgo)
Manganese mines and mining--Health aspects--Mexico--Molango (Hidalgo)
Manganese--Physiological effect.
Molango (Hidalgo, Mexico)--Environmental conditions.
Molango (Hidalgo, Mexico)--Social conditions.
Princeton subject headings:
Manganese mines and mining--Health aspects--Mexico--Molango (Hidalgo).
Manganese mines and mining--Social aspects--Mexico--Molango (Hidalgo).
Miners--Health and hygiene--Mexico--Molango (Hidalgo).
Molango (Hidalgo, Mexico)--Environmental conditions.