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German Expressionist prints : The Maria and Granvil Specks Collection - [ 1. Aufl ]
Milwaukee : Hudson Hills Press, 2004
Bibliothek der Bundeskunsthalle Bonn
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German marks : postwar drawings and prints ; donated to the Busch-Reisinger Museum through the German Art Dealers Association
Cambridge, Mass., 1998
Bibliothek der Bundeskunsthalle Bonn