TY  - BOOK
AU  - Nag,Prithvish
AU  - Sengupta,Smita  .
TI  - Geographical information system : concepts and business oportunities / 
SN  - 8180694356
U1  - 910.825 
PY  - 2007///
CY  - New Delhi : 
PB  - Concept Publishing , 
KW  - INFORMATION SYSTEM-GEOGRAPHY
N1  - INcludes bibliographical references and index
ER  -