Longley, P. A. (2005). Geographical information systems and science (2nd ed.). Chichester: John Wiley & Sons.
Παραπομπή Chicago StyleLongley, Paul A. Geographical Information Systems and Science. 2nd ed. Chichester: John Wiley & Sons, 2005.
Παραπομπή MLALongley, Paul A. Geographical Information Systems and Science. 2nd ed. Chichester: John Wiley & Sons, 2005.
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