1889-1943 1891-1976 1892-1927 1898-1976 1904-1988 20thcentury 21stcentury 730 abstract alexander alfredferdinand arp art arts biography biomorphism(artmovement) calder cataloguesraisonnésarp cologne composers correspondence correspondenceshaporin criticismandinterpretationarp criticismandinterpretationernst criticismandinterpretationgruenwald criticismandinterpretationshaporin dadaism exhibitions form(aesthetics) france french german germany historyandcriticism isamu jean max modern music noguchi sculpture shaporin sophie sovietunion taeuber-arp taueber-arp writtenworksarp