: 29/4 : GIS : 1/ esri . 2/ . 3/ Arc Catalog " " shape file +geo database 4/ " ". 5/ " ". 6/ "buffer+central feature+mean center" . 7/ . 9.3 GIS 9.1 9.2 ACCESS
....... ......... ............ ............. ***** ***** "..... ...."