Columbia subject headings:
Harvard subject headings:
Bilingualism--Political aspects--Puerto Rico.
English language--Puerto Rico.
Language policy--Puerto Rico.
Puerto Rico--Languages--Political aspects.
Spanish language--Puerto Rico.
Princeton subject headings:
Bilingualism--Political aspects--Puerto Rico.
English language--Puerto Rico.
Language policy--Puerto Rico.
Puerto Rico--Languages--Political aspects.
Spanish language--Puerto Rico.