Columbia subject headings:
Harvard subject headings:
Comparative education.
Education and state--Alberta.
Education and state--Germany--Bremen.
Language and languages--Study and teaching--Alberta.
Language and languages--Study and teaching--Germany--Bremen.
Multilingualism--Germany.
Programme for International Student Assessment
Second language acquisition.
Princeton subject headings:
Comparative education.
Education and state--Alberta.
Education and state--Germany--Bremen.
Language and languages--Study and teaching--Alberta.
Language and languages--Study and teaching--Germany--Bremen.
Multilingualism--Germany.
Programme for International Student Assessment.
Second language acquisition.