Columbia subject headings:
Albers, Josef.
Color in art--Exhibitions.
Graubner, Gotthard, 1930-2013--Exhibitions.
Harvard subject headings:
Albers, Josef--Exhibitions.
Graubner, Gotthard, 1930---Exhibitions.
Painting, German--20th century--Exhibitions
Princeton subject headings:
Albers, Josef.
Color in art--Exhibitions.
Graubner, Gotthard, 1930-2013--Exhibitions.