TY  - BOOK
AU  - Nag,Prithvish
AU  - Sengupta, Smita 
TI  - Introduction to geographical information system
SN  - 9788180694394
U1  - 910.2850954 23
PY  - 2008///
CY  - New Delhi
PB  - Concept Publishing Company
KW  - India
KW  - Geographic information systems
N1  - Includes Bibliographical References and Index
ER  -