Columbia subject headings:
Indians of Mexico--Mexico--Hidalgo (State)--Music--History and criticism.
Music--Mexico--Mezquital Valley (Hidalgo)--History and criticism.
Otomi Indians--Music--History and criticism.
Harvard subject headings:
Indians of Mexico--Mexico--Hidalgo (State)--Music--History and criticism.
Music--Mexico--Mezquital Valley (Hidalgo)--History and criticism.
Otomi Indians--Music--History and criticism.
Princeton subject headings: