Exhibition catalogue / artist's book by Seth Siegelaub published in conjunction with group exhibition organized by Michel Claura, held in Paris in April 1970. Introductory text by Claura. Includes contributions by Robert Barry, Marcel Broodthaers, Stanley Brouwn, Daniel Buren, Jan Dibbets, Jean-Pierre Djian, Gilbert & George, François Guinochet, Douglas Huebler, On Kawara, David Lamelas, Sol LeWitt, Richard Long, Edward Ruscha, Robert Ryman, Niele Toroni, Lawrence Weiner, Ian Wilson. Texts in English, French, and German.