TY  - GEN
AU  - Chang , Kang-tsung
TI  - Introduction to geographic information systems
SN  - 9780070606296
U1  - 910.285 
PY  - 2006///
CY  - New Delhi
PB  - Tata Mcgraw-Hill
KW  - GEOGRAPHY
KW  - INFORMATION TECHNOLOGY
KW  - GEOGRAPHIC INFORMATION SYSTEMS
ER  -