TY  - BOOK
AU  - Worboys,Michael
AU  - Duckham,Matt
TI  - GIS: a computing perspective 
SN  - 0415283752 (hbk.)
PY  - 2004///
CY  - Boca Raton, Florida.
PB  - CRC
KW  - Geographic information systems
N1  - Includes bibliographical references (p. 391-411) and index
ER  -