TY  - BOOK
AU  - Gorr, Wilpen L.,
AU  - Kurland, Kristen S.,  
TI  - Learning and Using Geographic Information Systems
SN  - 978 81 315 0760 5
U1  - 624.15109 
PY  - 2009///
CY  - New Delhi
PB  - Cengage Learning
KW  - Using GIS
ER  -