TY  - BOOK
AU  - Worboys, Michael.
AU  - Duckham, Matt,
TI  -  GIS: a computing perspective 
SN  - 0415283752 (alk. paper)
U1  - 910/.285 22
PY  - 2004///
CY  - Boca Raton, Fla.
PB  - CRC Press
KW  - Geographic information systems
N1  - Includes bibliographical references (p. 391-411) and index
ER  -