Title from title screen (viewed July 22, 2009). "March 1992." Includes bibliographical references (p. 229-237). "NPS D-14, April 1992"--P. [3] of cover.
OCLC:
(OCoLC)54678082
Locations:
USUX851 -- Iowa State University - Parks Library (Ames)
UPAX334 -- Upper Iowa University - Henderson-Wilder Library (Fayette)
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