Exhibition catalogue published in conjunction with show held in at Guttenberg Museum Mainz, May 31 - August 31, 1987 ; Brückenturm Galerie, May 30 - July 12 ; Institut Francaid Mainz, May 29 - July 12 ; PGM Architektenteam, May 30 - August 31. Text by Hans A. Halbey. Artists include John Cage, Ugo Carrega, Roland Barthes, Max Bense, Joseph Beuys, Julien Blaine, Alain Arias-Misson, Joan Brossa, Ernst Buchwalder, Vladimir Burda, Cieli Piccoli, Klaus Peter Dencker, and others. Includes folded card insert listing contents and checklist of the exhibition. Text in German.