TY  - BOOK
AU  - Nag, Prithvish
TI  - Introduction to geographical information system
SN  - 9788180694400
U1  - 910.01154 P8;2 
PY  - 2008///
CY  - New Delhi
PB  - Concept Publishing Company
KW  - Geographic information systems
KW  - Geography-India
ER  -