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> -----Original Message----- > From: Ray Denenberg, Library of Congress [mailto:[log in to unmask]] > Sent: Thursday, September 11, 2003 5:44 PM > > My suggestion is to add an attribute to <location> to indicate > if it's a physical or electronic source (values 'physical' and > 'electronic' or please suggest alternative values); in the > latter case a URL would be assumed. With all the markup potential, why "assumed"? Why not explicit markup saying that is a URL? Ralph Ralph LeVan Sr. Research Scientist OCLC Online Computer Library Center, Inc.