Columbia subject headings:
German language--Balkan Peninsula--Congresses.
German language--Europe, Central--Congresses.
German language--Europe, Eastern--Congresses.
Languages in contact--Balkan Peninsula--Congresses.
Languages in contact--Europe, Central--Congresses.
Languages in contact--Europe, Eastern--Congresses.
Linguistic change--Balkan Peninsula--Congresses.
Linguistic change--Europe, Central--Congresses.
Linguistic change--Europe, Eastern--Congresses.
Multilingualism--Balkan Peninsula--Congresses.
Multilingualism--Europe, Central--Congresses.
Multilingualism--Europe, Eastern--Congresses.
Harvard subject headings:
German language--Balkan Peninsula--Congresses.
German language--Europe, Central--Congresses.
German language--Europe, Eastern--Congresses.
Languages in contact--Balkan Peninsula--Congresses.
Languages in contact--Europe, Central--Congresses.
Languages in contact--Europe, Eastern--Congresses.
Linguistic change--Balkan Peninsula--Congresses.
Linguistic change--Europe, Central--Congresses.
Linguistic change--Europe, Eastern--Congresses.
Multilingualism--Balkan Peninsula--Congresses.
Multilingualism--Europe, Central--Congresses.
Multilingualism--Europe, Eastern--Congresses.
Princeton subject headings:
German language--Balkan Peninsula--Congresses.
German language--Europe, Central--Congresses.
German language--Europe, Eastern--Congresses.
Languages in contact--Balkan Peninsula--Congresses.
Languages in contact--Europe, Central--Congresses.
Languages in contact--Europe, Eastern--Congresses.
Linguistic change--Balkan Peninsula--Congresses.
Linguistic change--Europe, Central--Congresses.
Linguistic change--Europe, Eastern--Congresses.
Multilingualism--Balkan Peninsula--Congresses.
Multilingualism--Europe, Central--Congresses.
Multilingualism--Europe, Eastern--Congresses.