GORR, Wilpen L. GIS tutorial : workbook for Arcview 9 Wilpen L. Gorr and Kristen S. Kurland - 3rd ed - New York ESRI Press 2008 - xvi, 434 p.: ill. (some col.), maps ; 28 cm 2 CD-ROMs (4 3/4 in.) ISBN: 978-1-58948-205-0 Subjects--Topical Terms: Geography LC Class. No.: 910.285 / 22 Dewey Class. No.: 910.285 / 22