----------------------------Original message---------------------------- We have more duplicates available. Although we prefer to offer them to libraries, individuals may also request them. Let me know of your interest and send me a mailing label or your address. Duplicates are listed below: Geographic Information Systems: A Management Perspective, by Stan Aronoff, 1989, WDL Publications, Ottawa, Canada Geographic Information Systems in Government, v. 1, edited by Bruce K. Opitz, 1986, A. Deepak Publishing, Hampton, VA Remote Sensing Digital Image Analysis: an Introduction, by John A. Richards, 1986, Springer-Verlag, Heidelberg, New York The World Factbook 1992, CIA, Washington, DC Betty Graziani U.S. Geological Survey NMD Reference Collection 522 National Center Reston, VA 22092 Phone: (703) 648-4559 E-mail: [log in to unmask]