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Author/Creator
- Geological Survey (U.S.)29
- Holmes, Robert R., 1965-2
- Illinois. Division of Highways2
- South Florida Water Management District (Fla.)2
- Asquith, William H.1
- Brakebill, John W.1
- Brown, P. A.1
- Chen, Abraham H.1
- Chester County Water Resources Authority1
- Corsi, Steven R.1
- Coupe, Richard H. (Richard Henry), 1954-1
- Dettinger, M. D.1
- Dixon, Joann1
- Dunn, Chad J.1
- Dunn, Chad Jason1
- Eash, David A.1
- Ebbert, J. C.1
- Ellis, William H.1
- Fritz, Eric M.1
- Gerhart, James M.1