Issue number 3 of the German periodical Interfunktionen. Edited by Friedrich Wolfram Heubach. Contributions by Joseph Beuys, Walter de Maria, Dennis Oppenheim, Mike Heizer, Richard Long, Jan Dibbets, Robert Smithson, Friedrich Wolfram Heubach, Lutz Schirmer, Hagen Lieberknecht, Wolf Vostell, Diter Rot [Dieter Roth], Johannes Stüttgen, Matthias Schäffer, Gabor Altorjay, Günter Brus, James Lee Byars, LIDL and Jörg Immendorff. Text in German. Includes a tear-out postcard by Wolf Vostell.