Collection of essays by Harald Szeemann, Virgilio Gilardoni, Vacchino d' Ascona, Romano Broggini, Ulrich Linse, Hans Manfred Bock / Florian Tennstedt, Janos Frecot, Walter Schönenberger, Antje von Graevenitz, Willy Rotzler, Emanuel Hurwitz, Sybille Rosenbaum-Kroeber, Nicoletta und Othmar Birkner, Edmund Stadler, Theo Kneubühler, published in conjunction with show held at the Kunsthaus, Zürich, Switzerland, November 17, 1978 - January 28, 1979. Texts in German.