Columbia subject headings:
Authors, German--20th century--Exhibitions.
Lennartz, Franz--Exhibitions.
Lexicographers--Germany--Exhibitions.
Harvard subject headings:
Authors, German--20th century--Exhibitions.
Lennartz, Franz--Exhibitions.
Lexicographers--Germany--Exhibitions.
Princeton subject headings:
Authors, German--20th century--Exhibitions.
Lennartz, Franz--Exhibitions.
Lexicographers--Germany--Exhibitions.