@book{0b818cc1ef5a4c1d8d0f845ca0a1f553,
title = "Principles of geographic information systems : an introductory textbook",
keywords = "PGM, GIP, ADLIB-BOOK-360, NRS, ESA",
author = "{de By}, R.A. and R. Knippers and Yuxian Sun and M.C. Ellis and M.J. Kraak and M.J.C. Weir and P.Y. Georgiadou and M.M. Radwan and {van Westen}, C.J. and W. Kainz and E.J. Sides",
editor = "{de By}, R.A.",
year = "2001",
language = "English",
isbn = "90-6164-200-0",
series = "ITC Educational Textbook Series",
publisher = "International Institute for Geo-Information Science and Earth Observation",
address = "Netherlands",
edition = "2",
}