TY  - BOOK
AU  - Chang,Kang-tsung
TI  - Introduction to geographic information systems / 
SN  - 9780070658981
U1  - 910.285 
PY  - 2008///
CY  - New Delhi : 
PB  - Tata McGraw Hill Education , 
KW  - GEOGRAPHICAL INFORMATION SYSTEM
N1  - Includes bobliographical referrences and index
ER  -