Columbia subject headings:
Harvard subject headings:
Education--Puerto Rico--History
English language--Political aspects--Puerto Rico.
English language--Study and teaching--Puerto Rico.
Language and education--Puerto Rico.
Puerto Rico--Languages--Political aspects.
Princeton subject headings:
Education--Puerto Rico--History.
English language--Political aspects--Puerto Rico.
English language--Study and teaching--Puerto Rico.
Language and education--Puerto Rico.
Puerto Rico--Languages--Political aspects.