TY  - BOOK
AU  - Chang, Kang-tsung
AU  - 
TI  - Introduction to geographic information systems
SN  - 007-049552-1
U1  - 911:681.516 
PY  - 2002///
CY  - New Delhi
PB  - Tata McGraw-Hill
KW  - Geographical information systems
KW  - Geographic Information System
KW  - GIS
KW  - georgraphical ionformation systems
ER  -