TY  - BOOK
AU  - Worboys,Michael
AU  - Duckham,Matt  .
TI  - GIS : a computing perspective / 
SN  - 0415283752
U1  - 910.285 
PY  - 2004///
CY  - New York : 
PB  - CRC Press , 
KW  - GEOGRAPHIC INFORMATION SYSTEM
N1  - Includes bibliographical references and index
ER  -