At The Opera (Answer to the Question Whether Sponges Possess Consciousness) (In der Oper (Entscheidung der Frage, ob den Schwämmen Bewußtsein zukommt))
Credit: Johanna and Leslie Garfield Fund
1973
Photolithograph on flocked paper
240.1997
Image © 2019 Estate of Sigmar Polke / Artists Rights Society (ARS), New York / VG Bild-Kunst, Bonn, Germany
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