Fourth issue of the German art periodical Interfunktionen. Texts by F. W. Heubach, Daniel Buren, Peter Weibel, Paul Sharits, W & B Hein and Valie Export. Features contributions by Panamarenko, Dennis Oppenheim, Keith Arnatt, Joseph Beuys, Daniel Buren, Diter Rot [Dieter Roth], Claus Böhmler, Günter Brus, Gilbert & George, Dieter Meier, and Jan Dibbets. Cover by Carl Andre. Edited by Heubach. Printed in black-and-white. Text in German.