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Library information resource sharing has traditionally been organized around the physical transfer of loans and copies from one location to another. Such interlibrary loan activities have become successively easier and more efficient because of the use of various technologies. Some of the latest and most successful of these include various web-based information services, such as Google, which help to facilitate both physical delivery and online access to information resources. The challenge now facing ILL librarians is to evaluate how to best incorporate these services into their existing operations and to determine whether these constitute additional ways to help patrons access information or whether they represent a paradigmatic alternative to traditional library-based information resource sharing.