Chapter 4

UNITED STATESDEPARTMENT OF THEINTERIORFred A. Seaton,SecretaryDepartment of Interior logo.NATIONAL PARK SERVICEConrad L. Wirth,Director

UNITED STATESDEPARTMENT OF THEINTERIORFred A. Seaton,Secretary

Department of Interior logo.

NATIONAL PARK SERVICEConrad L. Wirth,Director


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