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6by Kreutzer, Lee“...National Park Service, Department of the Interior,...”
Published 2006
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7by Kreutzer, Lee“...National Park Service, Department of the Interior,...”
Published 2010
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8
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Government Document Journal -
9Published 2002“...National Park Service, U.S. Dept. of the Interior,...”
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10Published 2002“...U.S. Dept. of the Interior, National Park Service,...”
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11Published 2003“...U.S. Dept. of the Interior, National Park Service,...”
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12Published 2008“...National Park Service, U.S. Department of the Interior,...”
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13Published 2002“...National Park Service, U.S. Department of the Interior,...”
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14Published 2009“...National Park Service, United States Department of the Interior,...”
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15by Thornberry, Trista L.“...National Park Service, Geologic Resources Division ; U.S. Department of the Interior, National Park...”
Published 2013
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16by Schoch-Roberts, Lisa“...U.S. Dept. of the Interior, National Park Service, Intermountain Region,...”
Published 1997
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17by Effinger, William L. (William Lloyd)“...U.S. Dept. of the Interior, National Park Service, Field Division of Education,...”
Published 1934
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18by Beals, Ralph L. (Ralph Leon), 1901-1985“...U.S. Department of the Interior, National Park Service, Field Division of Education,...”
Published 1935
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19by Theobald, David M.“...U.S. Department of the Interior, National Park Service, Natural Resource Program Center,...”
Published 2010
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20by Vana-Miller, David“...U.S. Department of the Interior, National Park Service, Natural Resource Program Center,...”
Published 2010
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