Chang, K. (2002). Introduction to geographic information systems. New Delhi: McGraw-Hill Higher Education.
Παραπομπή Chicago StyleChang, Kang-Tsung. Introduction to Geographic Information Systems. New Delhi: McGraw-Hill Higher Education, 2002.
Παραπομπή MLAChang, Kang-Tsung. Introduction to Geographic Information Systems. New Delhi: McGraw-Hill Higher Education, 2002.
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