Exhibition catalogue published in conjunction with show held November 9, 1979 - January 6, 1980. Text by A.L. Beeren, Paul Luttik, Albert Kuiper, Talitha Schoon, and Paul Donker Duyvis. Artists include Johnny van Doorn, Simon Posthuma, Willem de Ridder, Arthur Kopcke, George Brecht, Misha Mengelberg, Wim T. Schippers, Emmett Williams, and many others. Contains a section of documents - posters, manifestos, and photographs - of the actions, happenings, and performances of the 1960s and 1970s accompanied by brief descriptions. Illustrated in black-and-white. In Dutch.