Part 1 Computational support for GIS: on the integration of database systems and computational support for high-level modelling of spatio-temporal phenomena, Terence Smith; computer assisted tools for cartographic data capture, Tim Mayo; an automatic generalization system for large-scale topographic maps, Gary Robinson et al. Part 2 Spatial analysis and error: a concepts-rich approach to spatial analysis, theory generation and scientific discovery in GIS using massively parallel computing, Stan Openshaw; visualizing spatial association in area-value data, Jason Dykes; error simulation in vector GIS using neural computing methods, Chris Brunsdon and Stan Openshaw. Part 3 Applications of GIS: information sharing and the implementation of GIS - some key issues, Ian Masser and Heather Campbell; modelling environmental systems with GIS - theoretical barriers to progress, David Livingstone and Jonathan Raper; coupling of process-based vegetation models to GIS and knowledge-based systems with reference to vegetation change, David Miller.