Anderson, Glenn B.Conservation Agronomist, Soil Conservation Service; Richmond, Virginia, Personal Communication; February, 1985.
Forbes, Peter O. and Marshall, J. Paxton. “Flue-cured Tobacco Quota Ownership in Nine Counties in Virginia in 1983“ Department of Agricultural Economics, Virginia Polytechnic Institute and State University, M.B. 316; December, 1983.
Googins, Richard L.State Soil Scientist, Soil Conservation Service; Richmond, Virginia, Personal Communication; February, 1985.
Kramer, Randall A., McSweeney, William T., and Stavros, Robert W.. “Soil Conservation with Uncertain Revenues and Input Supplies.” Amer. J. Agr. Econ., 65 (1983):694–702.
Nott, H. and Combs, G. F.. “Data Processing of Ingredient Composition Data.” Feedstuff's, 39(1967):21–24.
Rahman, Sabir A. and Bender, F. E.. “Linear Programming Approximation of Least Cost Feed Mixes with Probability Restrictions.” Amer. J. Agr. Econ., 53(1971):612–619.
Smith, David N.Agricultural Economist, Soil Conservation Service; Richmond, Virginia, Personal Communication; February, 1985.
Soil Conservation Service. Crop Budget System Users Guide. Economics Division, USDA; Washington, DC, 1977.
Soil Conservation Service. Piedmont Bright Leaf Erosion Control Area. USDA, SCS; Richmond, Virginia; 1983.
U. S. Department of Commerce, Bureau of the Census. 1982 Census of Agriculture. Preliminary Report. United States Government Printing Office; Washington, D.C.; 1983.
Wade, James D. and Heady, Earl O.. “Controlling Non-Point Sediment Sources with Cropland Management: A National Economic Assessment.” Amer. J. Agr. Econ., 59(1977):13–24.
Walker, David J. and Timmons, John F.. “Costs of Alternative Policies for Controlling Agricultural Soil Loss and Associated Stream Sedimentation.” J. oil and Water Cons., 35(1980):177–182.
Wishcmeier, W. H. and Smith, D. D.. Predicting Rainfall Erosion Losses—A Guide to Conservation Planning. USDA, Agriculture Handbook No. 537, 1978.