Geology Reference
In-Depth Information
Society of Agricultural and Biological Engineers,
St. Joseph, MI.
USDA (1997) Agricultural Statistics . US Department of
Agriculture, National Agricultural Statistics Service.
US Govt. Printing Office, Washington, DC.
USDA Agricultural Research Service (1961) A universal
equation for predicting rainfall-erosion losses . ARS
22-66.
US Weather Bureau (1961) Rainfall Frequency Atlas of
the United States . US Department of Commerce,
Weather Bureau Technical Paper 40, January 1961,
Washington, DC.
Williams, J.R. (1975) Sediment yield prediction with
universal equation using runoff energy factor. In
Present and Prospective Technology for Predicting
Sediment Yield and Sources , ARS-S-40, United States
Department of Agriculture: 244-52.
Wischmeier, W.H. & Smith, D.D. (1978) Predicting
rainfall-erosion losses - a guide to conservation farm-
ing. USDA Agricultural Handbook No . 537.
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