Media type: E-Article Title: A Visual Obstruction Technique for Photo Monitoring of Willow Clumps Contributor: Boyd, Chad S.; Svejcar, Tony J. imprint: Elsevier BV, 2005 Published in: Rangeland Ecology & Management Language: English DOI: 10.2111/1551-5028(2005)058[0434:avotfp]2.0.co;2 ISSN: 1550-7424; 1551-5028 Keywords: Management, Monitoring, Policy and Law ; Nature and Landscape Conservation ; Animal Science and Zoology ; Ecology Origination: Footnote: Access State: Open Access