TY  - BOOK
AU  - Gorr,Wilpen L.
TI  - Learning and Using Geographic Information Systems
SN  - 9780619217471
AV  - G70.212  .G744 2007
PY  - 2006///
CY  - Boston
PB  - Course Technology,Thomson Learning
KW  - GIS
KW  - GIS resources
ER  -