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by Wolfelt, Alan D
by Knight, Paul; Wisniewski, Tiffany; Bahrmann, Chad; et al.
by Perles, Stephanie J.; Callahan, Kristina K.; Marshall, Matthew R.; et al.
by Zimmerman, Ephraim; National Park Service
by Tzilkowski, Caleb J.; Callahan, Kristina K.; Marshall, Matthew R.; et al.
by National Park Service
by Sheeder, Scott; Tzilkowski, Caleb; National Park Service
by Stein, R. Conrad; Catrow, David J.
by Joyce Tremel