TY  - BOOK
AU  - Chang Kang- tsung
TI  - Introduction to Geographic Information Systems
SN  - 0-07-049552-1
U1  - 910.285 20 
PY  - 2002///
CY  - London
PB  - Tata Mc Press
KW  - Introduction to Geographic Information Systems
N1  - Introduction GIS
ER  -