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Probing the Concept of Information Communities-A First Step Toward Semantic Interoperability

Werner Kuhn, Hardy Pundt, Mohamed M. Radwan, 1999 .

Principles of geographic information systems : an introductory textbook : translated into Mongolian

M. C. Ellis, W. Kainz, M. J. Kraak, 2004 .

Principles of geographic information systems : an introductory textbook

M. C. Ellis, M. Kraak, C. J. V. Westen, 2000 .