TY  - GEN
AU  - Gorr, Wilpen L.
AU  - Kurland, Kristen S.
TI  - Learning and usinggeographic information systems
SN  - 9788131507605
U1  - 910.285 
PY  - 2004///
CY  - New Delhi
PB  - Cengage Learning
KW  - Geographic information systems
KW  - Geography
ER  -