Regions of general uniform slope, comparatively level and of considerable extent. [USGS Circ 1048]
Alexandria Digital Library Feature Type Thesaurus
- Maps of distribution and abundance of selected species of birds on uncultivated native upland grasslands and shrubsteppe in the northern Great Plains [More info]
- Links to maps of breeding distributions of bird species on grasslands and shrublands in the northern Great Plains. Maps can also be downloaded from *.zip files in HTML format.