Columbia subject headings:
Linguistic minorities--Spain.
Multilingualism--Spain.
Sociolinguistics--Spain.
Harvard subject headings:
Bilingualism--Spain.
Language planning--Spain.
Linguistic minorities--Spain.
Multilingualism--Spain.
Sociolinguistics--Spain.
Princeton subject headings:
Bilingualism--Spain.
Language planning--Spain.
Linguistic minorities--Spain.
Sociolinguistics--Spain.