• Victor Freijser, Robert de Haas, Jurriaan van Kranendonk, Guus van Lummel, Philip Peters
• Willem Kloppers: Multiplicis Quintum 81. 11 zeefdrukobjecten /11 silkscreenpbjects

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• Willem Kloppers, 1981
• staple-bound
• edition of 500

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• subject： 1980-89, catalog

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