TY  - BOOK
AU  - Chang,Kang-Tsung, x
AU  - x
TI  - Introduction to geographic information systems
SN  - 9780070658981
U1  - 910.9/C454i 
PY  - 2008///
CY  - New Delhli
PB  - Tata McGraw-Hall
KW  - Geography in formation systems
KW  - Geography
N1  - x
ER  -