Second edition of exhibition catalogue published in conjunction with show held at the Kunsthalle Basel, January 24 - February 21, 1971. Text by G. Bussman, Gruppe Cronica, Herbert Marcuse, Robert Kudielka, and Gerald Gassiot-Talabot. Includes work by Josef Beuys, Guerrilla Art Action Group, Edward Kienholz, Wolf Vostell, Lucio Fanti, Antonio Dias, and many others. Profusely illustrated in black-and-white with checklist and a biography for each artist. In German.