TY  - BOOK
AU  - Shekhar,Shashi
AU  - Chawla,Sanjay
TI  - Spatial databases: a tour 
SN  - 0130174807
AV  - G70.212 
PY  - 2003///
CY  - Upper Saddle River, N.J.
PB  - Prentice Hall
KW  - Geographic information systems
N1  - "A Alan R. Apt book."; Includes bibliographical references (p. 250-257) and index
ER  -