The national parks America's best idea / Last refuge :
By the end of the 19th century, widespread industrialization has left many Americans worried about whether the country will have any pristine land left. At the same time, poachers in the parks are rampant, and visitors think nothing of littering or carving their names near iconic sites like Old Fait...
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| Other Authors: | , |
| Format: | Unknown |
| Language: | English |
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[Arlington, VA] :
Public Broadcasting Service (PBS),
2009
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| Series: | PBS Video Collection
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