Exhibition catalogue published in conjunction with show held at Kunsthalle Nürnberg, Germany, June 1 - July 8, 1990. Essay by Dieter Koepplin. Artists include Joseph Beuys, Francesco Clemente, Martin Disler, Donald Judd, Bruce Nauman, Claes Oldenburg, A.R. Penck and Frank Stella. Includes exhibition checklist, biographies and bibliography. Texts in German.