TY  - GEN
AU  - Chang, Kang-tsung
TI  - Introduction to geographic information systems
SN  - 9780070658981
U1  - 910.2 
PY  - 2008///
CY  - New Delhi
PB  - Tata McGraw-Hill
KW  - COMPUTER SYSTEMS
KW  - GEOGRAPHIC INFORMATION SYSTEMS
KW  - GEOGRAPHY
KW  - GIS
ER  -