TY  - BOOK
AU  - Chang, Kang-Tsung
TI  - Introduction to geographic information systems
SN  - 0-07-282682-7
U1  - 910.285 CHA 
PY  - 2006///
CY  - NEW YORK
PB  - MCGRAW HILL
KW  - GEOGRAPHIC INFORMATION SYSTEMS.GIS
ER  -