Columbia subject headings:
Bilingualism--Mexico--Tlaxcala (State)
Education, Bilingual--Mexico--Tlaxcala (State)
Indians of Mexico--Languages.
Nahuatl language--Semantics.
Nahuatl-Spanish dialect.
Harvard subject headings:
Bilingualism--Mexico--Tlaxcala (State).
Education, Bilingual--Latin America
Education, Bilingual--Mexico--Tlaxcala (State).
Indians of Mexico--Languages
Nahuatl language--Semantics.
Nahuatl-Spanish dialect.
Princeton subject headings: