Paris: Chêne, 1973. Text in German, English and French. Photos taken by the German photographer Stefan Moses (1928-2018). Loose design (featured in the book) loosely laid in. Also b/w design on acetone loosely laid in. 88 pages. 245 x 245 mm (9¾ x 9¾ inches). Some online copies claim to be signed by Vasarely, but actually there is a facsimile printed signature common to front endpaper in all copies!