Intermedia '69 - Edition Tangente 1969
Exhibition's catalog. May 1969 in Heidelberg
With Gabor Altorjay, Thomas Bayrle, Joseph Beuys, Christo, Robert Filliou, Dick Higgins, Milan Knizak, Palermo, Pistoletto, Rinke, Dieter Rot, Ben Vautier, Günter Uecker etc...