Document Type

Article

Publication Date

Spring 2009

Publication Title

Park Science

Volume

26

Issue

1

First Page

17

Last Page

21

Required Publisher's Statement

Park Science 26(1):17–21. Available at http://www.nature.nps.gov/ParkScience/archive/PDF/Article_PDFs/ParkScience26(1)Spring2009_17-21_Bunn_2612.pdf.

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