Natural history in the National Park System and on the national registry of natural landmarks.
|Corporate Author:||United States.|
Washington, D.C. : National Park Service, 
> United States.
National parks and reserves > United States > Management.
"NPS D-545"--P. 99.
Shipping list no.: 90-769-P.
Spine title: Natural history, national parks and landmarks, 1990.
"This publication updates 'Part Two of the National Park System plan - Natural History'"--P. 1.
i, 99 p.,  folded leaf of plates :
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