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David O'Sullivan Editor & Author

David O'Sullivan, PhD, is Associate Professor of Geography at the University of Auckland, New Zealand.

David J. Unwin, MPhil, formerly professor of geography at Birkbeck College in the University of London, UK, is now retired. He is also the co-author of Computer Programming for Geographers (with J.A. Dawson) and coeditor of Visualization in Geographic Information Systems (with Hilary M. Hearnshaw), both published by Wiley.