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Frequency
Quarterly, 2004-
Monthly, 1981-June 1981
Bimonthly, July/Aug. 1981-2003
Publication Date
Began with: Vol. 55, no. 1 (January 1981).
Access
Use copy Restrictions unspecified star
System Details
Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. http://purl.oclc.org/DLF/benchrepro0212
Issued By
Published by: National Parks and Conservation Association, 1981-1999; National Parks Conservation Association, 2000-
Note
digitized 2010 HathiTrust Digital Library committed to preserve pda
Vol. 55, no. 1 (January 1981); title from cover jpeg (publisher's web site, viewed November 10, 2022).
Vol. 96, no. 4 (fall 2022) (publisher's web site, viewed November 10, 2022).