Columbia subject headings:
Drawing, Austrian--20th century--Catalogs.
Drawing, German--20th century--Catalogs.
Prints--Austria--20th century--Catalogs.
Prints--Germany--20th century--Catalogs.
Watercolor painting, Austrian--20th century--Catalogs.
Watercolor painting, German--20th century--Catalogs.
Harvard subject headings:
Princeton subject headings:
Catalogs.
Drawing--20th century--Catalogs.
Prints--20th century--Catalogs.
Watercolor painting--20th century--Catalogs.