TY  - BOOK
AU  - Demers, Michael N.
AU  - 
TI  - Fundamentals of geographic information systems
SN  - 0-471-20491-9
U1  - 911:681.516 
PY  - 2005///
CY  - USA
PB  - John Wiley & Sons
KW  - Geographic information systems
KW  - GIS
KW  - georgraphical ionformation systems
ER  -