This book contains selected contributions from the International Forum on `Geostatistics for the Next Century', organized in honour of Michel David in Montreal, June 1993. In order to present current problems and concerns, disseminate new significant results and futuristic ideas, as well as to promote dialogue and critique, the book includes contributions from leading researchers and practitioners as well as comments by participants and replies by authors. Notable new advances and ideas featured in this volume include: developments in dealing with uncertainty, advances in sampling, fuzzy set and Bayesian frameworks, fractal and multifractal approaches, neural network based simulation, optimization based conditional simulations, spatiotemporal modelling, issues of support change and upscaling, new stochastic fluid flow related formulations. For researchers and practitioners working in quantitative modelling in earth sciences and engineering, including mining, petroleum, environmental sciences, hydrogeology, geotechnics, applied statistics and renewable resources.