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United States Geological Survey (USGS)
Geological Survey (U.S.)
U.S. Geological Survey Water-Resources Invenstigations
Techniques of water-resources investigations of the United States Geological Survey ; bk. 3, ch. A15.
Techniques of water-resources investigations of the United States Geological Survey. Bk.3, Applications of hydraulics ; ch.C1.
Geological Survey (U.S.). Earth Sciences Assistance Office.
U.S. Geological Survey circular ; 1075.
U.S. Geological Survey circular ; 1245
U.S. Geological Survey Circular
Fact sheet (Geological Survey (U.S.)) ; FS-03-076
Fact sheet (Geological Survey (U.S.)) ; FS-02-084.
Fact sheet (Geological Survey (U.S.)) ; FS-00-089
Esri, The Nature Conservancy, United States Geological Survey
Geological Survey (U.S.). Reports-Open file series ; 79-1583.
Open-file report - U.S. Geological Survey
Geological Survey (U.S.) circular, 464
Geological Survey (U.S.). Circular, 478