1927-2006 1929- 1938- 20thcentury 21stcentury allan architects architetureandsociety art artandsociety artists artists'books arts austria austrian basel buildings catalogs civilization claes conceptualart criticismandinterpretationkaprow criticismandinterpretationoldenburg england etc exhibitions frenchcontemporaryarthappenings20thcentury gangart(group) germany happening hermann history ice inpopularculture interviews kaprow koolhaas london modern nitsch oldenburg performanceart politik rem structures switzerland unitedstates vienna