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161Published 1940“...National Park Service,...”
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162by Louter, David“...National Park Service,...”
Published 2005
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163by Kreutzer, Lee“...National Park Service,...”
Published 2007
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164Published 2011“...National Park Service,...”
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165
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168
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169Published 2004“...National Park Service,...”
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170by Ringsmuth, Katherine Johnson“...National Park Service :...”
Published 2012
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171
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173by Porter, Charles W., III (Charles Wesley), 1904-“...National Park Service,...”
Published 1965
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174
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175Published 2012“...National Park Service,...”
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176Published 2012“...National Park Service,...”
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177Published 2007“...National Park Service,...”
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178
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179by Joyner, Brian D.“...National Park Service,...”
Published 2009
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180Published 2013“...National Park Service,...”
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