TY  - BOOK
AU  - Chrisman, Nicholas.
TI  - Exploring geographic information systems
SN  - 0471314250
U1  - 025.1691 
PY  - 2002///
CY  - New York
PB  - John Wiley
KW  - Geographic information systems
N1  - Includes bibliographical references (p.265-292) and index
ER  -