TY  - BOOK
AU  - Worboys,Michael
AU  - Duckham,Matt
TI  - GIS :A computing perspective
SN  - 0415283752 (alk. paper)
U1  - 910.285 
PY  - 2004///
CY  - Boca Raton, Fla.
PB  - CRC Press
KW  - Geographic information systems
KW  - Geography
ER  -