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Author/Creator
- Geological Survey (U.S.)32
- Arkansas Geological Commission4
- Arkansas Soil and Water Conservation Commission4
- Lacombe, Pierre (Pierre J.)4
- New Jersey. Department of Environmental Protection4
- Rosman, Robert4
- United States. Soil Conservation Service4
- Lumber River Council of Governments3
- National Water-Quality Assessment Program (U.S.)3
- Plafcan, Maria3
- South Dakota Geological Survey3
- Strickland, A. G. (Alfred Gerald), 1953-3
- Dugan, Jack T.2
- Kingsbury, James A.2
- Mississippi. Bureau of Land and Water Resources2
- Oahe Conservancy Sub-District (S.D.)2
- Shelton, John M.2
- Sumner, D. M.2
- Andrews, William J., 1962-1
- Barlow, Paul M.1