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Eighty years of vegetation and landscape changes in the Northern Great Plains : a photographic record
- Klement, K. D., Heitschmidt, Rodney K., Kay, C. E., and United States Agricultural Research Service.
- Conservation research report ; no. 45 2001
- Range plants -- Great Plains, Landscape -- Great Plains, Botany -- Great Plains, forbs, grasses, landscapes, botanical composition, shrubs, trees, and Great Plains region
- U.S. Dept. of Agriculture, Agriculture Research Service
- USDA publications