Thanks very much for your wonderful products I have used for all these many years...(I started over 25 years ago when I was at the Univ. of Idaho; I had one of the early copies of Surfer, etc.) Ph.D. Retired Professor of Geography
Central Washington University
My congratulations to your 30th anniversary! I have been using Surfer and Grapher for more than 15 years now and must say they are of real value in my daily work. Geophysics / EOD Consultant
Keep up the good work!