Large-scale exhibition catalogue for show at the Kunstmuseum Luzern, Luzern, Switzerland, May 31 - July 5, 1970. Essays by Jean-Christophe Ammann and Germano Celant. Artists include Giovanni Anselmo, Alghiero Boetti, Pierpaolo Calzolari, Luciano Fabro, Giorgio Griffa, Jannis Kounellis, Roberto Maini, Eliseo Mattacci, Mario Merz, Giulio Paolini, Giuseppe Penone, Michelangelo Pistoletto, Emilio Prini, Salvo, and Gilberto Zorio. Includes a special catalogue section in back featuring the work of artists Irma Ineichen and Josephine Troller, as well as a section of newspaper reviews in relation to the exhibition compiled by Robert Strübin and Bernhard Wyrsch. With artists' biographies and exhibition histories. Printed in black-and-white. Text in German.