1. Ali E (2020) Geographic information system (GIS): definition, development, applications and components. Department of Geography, Ananda Chandra College, India
2. Berry JK (1986) Learning computer-assisted map analysis. J Forestry 39–43
3. Bock Y (1996) Introduction. In: Kleusberg A, Teunissen PJG (eds) GPS for Geodesy. Springer-Verlag, Berlin, Germany, pp 3–36
4. Bor WT (1994) The use of GPS in GIS applications. J Geogr Sci 17:77–85
5. Burrough PA (1986) Principles of geographical information systems for land resources assessment. Oxford University Press, N.Y., p 193