Columbia subject headings:
Austria--Languages--Political aspects--Congresses.
German language--Austria--Congresses.
Language policy--Austria--Congresses.
Multilingualism--Austria--Congresses.
Harvard subject headings:
Austria--Languages--Political aspects--Congresses.
German language--Austria--Congresses.
Language policy--Austria--Congresses.
Multilingualism--Austria--Congresses.
Princeton subject headings:
Austria--Languages--Political aspects--Congresses.
Language and languages--Study and teaching--Congresses.
Language policy--Austria--Congresses.
Multilingualism--Austria--Congresses.