Chester, Perhaps you could define what a GIS is, in terms of usage, etc. Anita Cohen-Williams; Reference Services; Hayden Library Arizona State University, Tempe, AZ 85287-1006 PHONE: (602) 965-4579 FAX: (602) 965-9169 BITNET: IACAGC@ASUACAD INTERNET: [log in to unmask]