TY  - BOOK
AU  - Chrisman, Nicholas
TI  - Exploring geographic information systems
SN  - 0471108421
AV  - G70.121  .C48  1997 
PY  - 1996///
CY  - New york
PB  - John wiley & sons, Inc.
KW  - Geographical
N1  - Includes bibliographical references and index
ER  -