1OCLC Membership. Perceptions of Libraries and Information Resources (2005). [2009- 12- 10]. http://www, oclc. org/reports.
2Library of Illinois University at Urbana_Champaign. Gifts Policy. [2009-12-09]. http://www, library, illinois, edu/administration/collections/gifts.
3Raya Fidel. The User- Centered Approach How We Got Here. see: William. J. Wheeler. Saving the User's Time through Subject Access Innovation University of Illinois Press,2000:79-99.
