Exhibition catalogue published in conjunction with show of Sigmar Polke's graphic works produced between 1967 and 1975, held April 13 - July 9, 1975. Produced in collaboration with Achim Duchow. Texts by Jens Christian Jensen, Carl Vogel and Eberhard Freitag. Incorporated artist's project "Mu Nieltnam Netorruprup." Texts in German.