Columbia subject headings:
Harvard subject headings:
German language--Dictionaries--Polish--History--Congresses.
German language--Lexicography--History--Congresses.
Lexicography--Germany--History--20th century--Congresses.
Lexicography--Poland--History--20th century--Congresses.
Polish language--Dictionaries--German--History--Congresses.
Polish language--Lexicography--History--Congresses.
Princeton subject headings:
German language--Lexicography.
Lexicography--Germany--History--20th century.
Lexicography--Poland--History--20th century.
Polish language--Lexicography.