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
I usually use the products of Golden Software. My favorite! Geologist, Nittetsu Mining Consultants Co., Ltd.
Very impressed. Not only with the software but also the service! Marine Geohazard Consultant