Columbia subject headings:
Art, German--20th century--Dictionaries--German.
Art, German--20th century--Directories.
Art, Modern--20th century--Dictionaries--German.
Art, Modern--20th century--Directories.
Artists--Europe, German-speaking--Biography--Dictionaries--German.
Artists--Germany--Biography--Dictionaries.
Harvard subject headings:
Art museums--Austria--History--20th century--Handbooks, manuals, etc.
Art museums--Germany--History--20th century--Handbooks, manuals, etc.
Art museums--Switzerland--History--20th century--Handbooks, manuals, etc.
Artists--Austria--Biography--Dictionaries.
Artists--Europe, German-speaking--Biography--Dictionaries.
Artists--Germany--Biography--Dictionaries.
Artists--Switzerland--Biography--Dictionaries.
Princeton subject headings: