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Roger Kjelgren

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Roger Kjelgren
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Copyright 2008, by the Contributing Authors. Cite/attribute Resource . admin. (2006, August 18). Roger Kjelgren. Retrieved January 08, 2011, from Free Online Course Materials — USU OpenCourseWare Web site: http://ocw.usu.edu/University_Extension/Turf_Management/ecimage.2006-08-11.8032996610.jpg-view.html. This work is licensed under a Creative Commons License Creative Commons License