**SplineCalc 4.3.2**
SplineCalc is multipurpose scientific calculator for implementation of various mathematical operations with maps (grids), data tables, lines, polygons (including multiply connected) and numbers. You can specify some surface analytically or load it from file, calculate first- and second-order partial derivatives, surface area and volume by contour integration with high precision. SplineCalc can be useful for hard scientist or Surfer users.
See also: scientist, biology, ecology, medicine, geophysics, geology, physics, volume, area, contour, integral, calculate, derivative, surface, logical, number, polygon, surfer, lexeme, mathematical, map, grid, science, math, calculator, SplineCalc, student |

**EcotonStamp 1.2**
Program will enable stamp collectors to gather and put in catalogues post stamps dedicated to ecological issues. Our program has Russian and English interface and data base; general theme - ecology is subdivided into several sections; every stamp has a color illustration; stamps are shown individually or by sets; a detailed description of every stamp is stored in the data base. Stamps are referenced by "Scott", "Michel" etc.
See also: Topical post stamps collecting, ecology and environmental protection, catalogue of the private collection, Ecoton, Ekoton |