Columbia subject headings:
Harvard subject headings:
Comparative linguistics--Congresses
Europe, Eastern--Languages--Congresses.
Interference (Linguistics)--Congresses.
Languages in contact--Europe, Eastern--Congresses.
Multilingualism--Europe, Eastern--Congresses.
Princeton subject headings:
Comparative linguistics.
Europe, Eastern--Languages.
Interference (Linguistics)
Languages in contact--Europe, Eastern.