Geostatistical Modeling Aspects and New (Geo)statistical Tools.- How We Build Geostatistical Models and Deal with Their Output.- Spartan Random Fields: Smoothness Properties of Gaussian Densities and Definition of Certain Non-Gaussian Models.- Bayesian Trans-Gaussian Kriging with Log-Log Transformed Skew Data.- Kriging and Splines: Theoretical Approach to Linking Spatial Prediction Methods.- ANNEX Model: Artificial Neural Networks with External Drift...