Columbia subject headings:
Bilingualism--Southwestern States.
English language--Dialects--Southwestern States.
Languages in contact--Southwestern States.
Southwestern States--Languages.
Spanish language--Dialects--Southwestern States.
Harvard subject headings:
Bilingualism--Southwestern States.
English language--Dialects--Southwestern States.
English language--United States
Languages in contact--Southwestern States.
Languages in contact.
Southwestern States--Languages.
Spanish language--Dialects--Southwestern States.
Princeton subject headings:
Bilingualism--Southwestern States.
English language--Dialects--Southwestern States.
Lanuguages in contact.
Spanish language--Dialects--Southwestern States.