ASSEMBLAGES, ENVIRONMENTS & HAPPENINGS. With a selection of scenarios by 9 Japanese members of the Gutai Group, Jean-Jacques Lebel, Wolf Vostell, George Brecht, Kenneth Dewey, Milan Knizak and Allan Kaprow. Published by Harry N. Abrams in New York in 1966, with a soft cover, measuring 24 x 24 cm, and containing 341 pages with 15039 illustrations.