Title from HTML index page (viewed on May 6, 2008). "Prepared in cooperation with the National Park Service"--PDF title screen. Includes text, 6 colored photos, 3 location maps, 2 tables, and 1 graph. Includes bibliographical references.
Series:
Geologic investigations series I-2771
OCLC:
(OCoLC)227035494
Locations:
USUX851 -- Iowa State University - Parks Library (Ames)
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.