Digital Raster Grid Property Maps Versioning for North America.

Zamir Libohova1, Nathan P. Odgers2, James A. Thompson3 and Sharon Waltman2, (1)USDA-NRCS-National Soil Survey Center, Lincoln, NE, (2)National Soil Survey Center Geospatial Research Unit, West Virginia University, Division of Plant and Soil Sciences, Morgantown, WV, (3)Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV