Columbia subject headings:
German language--Baltic Sea Region--Technical German--Congresses.
German language--Baltic Sea Region--Usage--Congresses.
German language--Baltic States--Technical German--Congresses.
German language--Baltic States--Usage--Congresses.
German language--Finland--Technical German--Congresses.
German language--Finland--Usage--Congresses.
Harvard subject headings:
German language--Baltic Sea Region--Technical German--Congresses.
German language--Baltic Sea Region--Usage--Congresses.
German language--Baltic States--Technical German--Congresses.
German language--Baltic States--Usage--Congresses.
German language--Finland--Technical German--Congresses.
German language--Finland--Usage--Congresses.
Princeton subject headings:
German language--Baltic Sea Region--Technical German--Congresses.
German language--Baltic Sea Region--Usage--Congresses.
German language--Baltic States--Technical German--Congresses.
German language--Baltic States--Usage--Congresses.
German language--Finland--Technical German--Congresses.
German language--Finland--Usage--Congresses.