TY  - BOOK
AU  - Prithvish Nag
AU  - Smita Sengupta
TI  - Introduction to geographical information system
SN  - 9788180694394
U1  - 910.285 
PY  - 2008///
CY  - Newdelhi
PB  - Concept, 
KW  - Geographic information systems
KW  - Dataprocessing India
KW  - Geography
ER  -