Proceedings of the NATO Advanced Research Workshop on Advances in Analytical and Numerical Groundwater Flow and Quality Modelling, Lisbon, Portugal, June 2-6, 1987I. Principles, Basic Equations and Analytical Solutions.- Review of stochastic theory of transport in groundwater flow.- On the identification of the parameters of groundwater mass transport.- Heat and mass transfer in unsaturated porous media with application to thermal energy storage.- Basin-scale transport of dissolved species in groundwater.- Variable density fluid flow in the brackish transition zone between fresh and saline groundwater.- Stationary principles for flow and transport in aquifers.- II. Modelling Flow and Transport in Porous-Like Media.- An overwiew of groundwater modelling.- Incorporating assurance into groundwater quality management models.- The eigenvalues approach for solving linear groundwater flow problems.- New method for diffusive transport.- Comparison of fast equation solvers for groundwater flow problems.- Modelling flow and transport through porous media in vector computers.- Eulerian-Lagrangian method for solving transport in aquifers.- Hydrodynamic dispersion in model porous media.- The random walk method in pollutant transport simulation.- Modeling of solute transport with the random walk method.- III. Modelling Flow and Transport in Fractured Media.- Modelling of flow through fractured rocks: geostatistical generation of fractures networks. Stress-flow relationship in fractures.- Combined seismic and hydraulic method of modeling flow in fractured low permeability rocks.- Stochastic continuum representation of fractured rock permeability as an alternative to the REV and fracture network concepts.- Flow in three-dimensional fracture networks using a discrete approach.- MINC: an approach for analyzing transport in strongly heterogeneous systems.- A stochastic particle transport model based on directional statistics of flow through fracture networks.- IV. Consideration of FlÓQ