A history of saguaro cactus monitoring in Saguaro National Park, 1939-2007 Eric B. Ahnmark, Don E. Swann; editing and design: Alice Wondrak Biel. / authors :.

Author/creator Ahnmark, Eric B. author.
Other author Swann, Don E., author.
Other author Wondrak Biel, Alice.
Other author Natural Resource Program Center (U.S.), issuing body.
Format Electronic
PublicationFort Collins, Colorado : U.S. Department of the Interior, National Park Service, Natural Resource Program Center, 2009.
Description1 online resource (x, 24 pages) : color illustrations, color maps.
Supplemental Contenthttps://purl.fdlp.gov/GPO/gpo82438
Subjects

SeriesNatural resource report ; NPS/SODN/NRR--2009/093
Natural resources report 2009/093. ^A89467
General note"NPS D-182, February 2009"--Page ii.
General note"Experience your America"--Page 4 of cover.
General noteGPO Cataloging Record Distribution Program (CRDP).
Bibliography noteIncludes bibliographical references (pages 21-23).
Source of descriptionDescription based on online resource; title from PDF title page (NPS.gov website, viewed January 10, 2020).
GPO item number0646-R (online)
Govt. docs number I 29.89:2009/093