References
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- Bennett, H.H., 1926, Shall we throw away our soil? The soil is our most valuable asset. Are we treating it right? Scientific American 134(2), 96–97. doi: https://doi.org/10.1038/scientificamerican0226-96
- Hall, A.R., 1937, Early American Erosion-control Practices in Virginia USDA Miscellaneous Publication No 256 (Washington DC: USDA), p. 1.
- Bell, E.H., 1942, Culture of a Contemporary Rural Community: Sublette, Kansas (Washington DC: USDA Bureau of Agricultural Economics), p. 6.
- Woodard, C., 2016, American Charter; a History of the Epic Struggle between Individual Liberty and the Common Good (New York: Viking Books), p. 98.
- Walford, E., 1869, The Words of Wellington, Collected from His Despatches, Letters and Speeches (London: Sampson Low, Son, and Marston), p. 30.