Burrough P. Principles of Geographical Information Systems 1998

Textbook in PDF format

Geographical Information: Society, Science, and Systems.
Data Models and Axioms: Formal Abstractions of Reality.
Geographical Data in the Computer.
Data Input, Verification, Storage, and Output.
Creating Continuous Surfaces from Point Data.
Optimal Interpolation using Geostatistics.
The Analysis of Discrete Entities in Space.
Spatial Analysis using Continuous Fields.
Errors and Quality Control.
Error Propagation in Numerical Modelling.
Fuzzy Sets and Fuzzy Geographical Objects.
Current Issues and Trends in GIS