my friend has the following books he's getting rid of: Expert C Programming Deep C Secrets Peter van der Lingen 1994 Sun Microsystems Introduction to Programming with Mathematica Richard J. Gaylord, Samuel N. Kamin, Paul r. Wellin 1993 Springer Verlag Mathematica A System for Doing Mathematics by Computer Stephen Wolfram Second Edition 1991 Wolfram Research Smalltalk-80 The Language Adele Goldberg and David Robson 1989 Programming in Lua Roberto Ierusalimschy 2003 Programming in Prolog Fifth Edition 2003 William F. Clocksin, Christopher S. Mellish Springer Prolog Programming for Artificial Intelligence third edition Ivan Bratko The books are currently in Reston VA, if anyone is interested PM me( michael.kato@gmail.com) and I'll put you in touch with my friend. If you want any of these and are not able to pickup, it might be possible for me to bring them to the next workshop at System Source I think scheduled for 7/22-23(I plan to be there at least on 23 if things go better than expected I'll be there 22 as well) Hope the books can find a good home. ....maki....