Columbia subject headings:
Artists--Germany--21st century.
Harvard subject headings:
Artists--Germany--21st century.
Humm, Philipp-Rudolf--Catalogs.
Painters--Germany--21st century.
Princeton subject headings:
Artists--Germany--21st century.
Catalogs.
Humm, Philipp-Rudolf, 1959---Catalogs.
Painters--Germany--21st century.