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41
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42Published 1981“...U.S. Geological Survey,...”
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46Published 1981“...U.S. Geological Survey,...”
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47Published 1982“...U.S. Geological Survey,...”
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49Published 1982“...U.S. Geological Survey,...”
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50Published 1983“...U.S. Geological Survey,...”
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51Published 1983“...U.S. Geological Survey,...”
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52Published 1983“...U.S. Geological Survey,...”
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53Published 1983“...U.S. Geological Survey,...”
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54Published 1983“...U.S. Geological Survey,...”
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55
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56by McConaughy, Christopher E.“...U.S. Geological Survey,...”
Published 1982
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57Published 1981“...U.S. Geological Survey,...”
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