Columbia subject headings:
Harvard subject headings:
Intercultural communication--Australia.
Intercultural communication--Europe, Central.
Intercultural communication--Japan
Languages in contact--Australia.
Languages in contact--Europe, Central.
Languages in contact--Japan.
Oral communication--Australia.
Oral communication--Europe, Central.
Oral communication--Japan.
Princeton subject headings:
Language maintenance--Australia.
Language maintenance--Europe.
Language maintenance--Japan.
Languages in contact--Australia.
Languages in contact--Europe.
Languages in contact--Japan.
Multilingualism--Australia.
Multilingualism--Europe.
Multilingualism--Japan.
Sociolinguistics.