 Album varié 20 gavures sur acier |  Serge Poliakoff |  VAN KOUSWIJK, MANON Manon van Kouswijk The pearl chain principle Hanging Around |  AMMANN, JEAN-CHRISTOPHE A.O. The Rings of Dieter Roth Documents of a Friendship with Hans Langenbacher |  Luc Peire "environnement" 1966 photo Jean Mil |