NAG, P Geographical information system: concepts and business oportunities Prithvish Nag and Smita Sengupta - New Delhi Concept 2007 - xv,504p. plates.(col.) ISBN: 81-8069-436-4 300.00 Subjects--Topical Terms: GEOGRAPHIC INFORMATION SYSTEM(GIS) Dewey Class. No.: GEO 910.285425 / NPt07