Practical Geostatistics approaches the application of geostatistical theory to subsurface characterization using an integrated toolbox of statistical, geostatistical, spatial analysis and visualization techniques. It describes the data structures required, through a discussion of the concepts, theory and application, right up to a qualification of the end results. The linked, hypertext document structure facilitates the integration of theoretical discussion with detailed worked examples and numerous color images of computer visualization. It also allows multi-level progression through practical geostatistics at a general, theoretical, application or interactive review level, with numerous links in between. The document structure facilitates access using standard Web browser technology on any computer platform.