Columbia subject headings:
Europe, Central--Languages--Congresses.
German language--Social aspects--Europe, Central--Congresses.
German language--Study and teaching--Europe, Central--Congresses.
German philology--Congresses.
Languages in contact--Europe, Central--Congresses.
Sociolinguistics--Europe, Central--Congresses.
Harvard subject headings:
German language--Study and teaching--Europe, Central--Congresses.
Princeton subject headings:
Europe, Central--Languages--Congresses.
German language--Social aspects--Europe, Central--Congresses.
German language--Study and teaching--Europe, Central--Congresses.
German philology--Congresses.
Languages in contact--Europe, Central--Congresses.
Sociolinguistics--Europe, Central--Congresses.