The Online Books Page

Books by William L. Halvorson:

Books in the extended shelves:

• Halvorson, William L. (William Lee), 1943-: California grassland restoration literature (Redwood City Seed Company, 1990), also by Jon E. Keeley and California Water Resources Center (page images at HathiTrust)
• Halvorson, William L. (William Lee), 1943-: Floristic surveys of Saguaro National Park protected natural areas (United States Geological Survey, Sonoran Desert Field Station, School of Renewable Natural Resources, 2000), also by Brooke S. Gebow and Ariz.) Sonoran Desert Field Station (Tucson (page images at HathiTrust)
• Halvorson, William L. (William Lee), 1943-: Inventory of riparian habitat along Rincon Creek near Tucson, Arizona (United States Geological Survey, Cooperative Park Studies Unit, School of Renewable Natural Resources, The University of Arizona, 1997), also by Mark K. Briggs, Mary K. Schmid, and Ariz.) Cooperative National Park Resources Studies Unit (Tucson (page images at HathiTrust)
• Halvorson, William L. (William Lee), 1943-: Meeting resource management information needs : fourth Conference on Research and Resource Management in the Southwestern Deserts, May 15-17, 2002 : extended abstracts (USGS Sonoran Desert Field Station at the University of Arizona, 2002), also by Ariz.) Conference on Research and Resource Management in the Southwestern Deserts (4th : 2002 : Tucson and Brooke S. Gebow (page images at HathiTrust)
• Halvorson, William L. (William Lee), 1943-: Plant communities of San Nicolas Island, California (National Biological Service, Cooperative Park Resources Studies Unit, School of Renewable Natural Resources, 1996), also by Ariz.) Cooperative National Park Resources Studies Unit (Tucson (page images at HathiTrust)
• Halvorson, William L. (William Lee), 1943-: Saguaro National Park (U.S. Geological Survey, Cooperative Park Studies Unit, School of Renewable Natural Resources, 1999), also by Pamela J. Swantek, Cecil R. Schwalbe, Ariz.) Cooperative National Park Resources Studies Unit (Tucson, Geological Survey (U.S.), and United States National Park Service (page images at HathiTrust)
• Halvorson, William L. (William Lee), 1943-: San Nicolas Island vegetation monitoring report, 1993-1996 (U.S. Geological Survey, Cooperative Park Studies Unit, School of Renewable Natural Resources, 1996), also by Katherine A. Chess, A. Kathryn McEachern, Ariz.) Cooperative National Park Resources Studies Unit (Tucson, Geological Survey (U.S.), and United States National Park Service (page images at HathiTrust)

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