Museums Call for System To Address Nazi Booty
Directors of nation's top art museums call for creation of system to resolve potential ownership disputes amid growing claims that they are displaying wartime plunder; Philippe de Montebello, director of Metropolitan Museum of Art, is heading 13-member task force formed by Association of Art Museum Directors, which includes heads of 170 largest art museums in North America, to develop guidelines to resolve individual ownership claims arising from seizure of art works before, during and immediately after World War II; concern among members of Congress over difficulties posed by potential claims noted; photo (M)