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Donald R. Farrar taught woody plant biology for forestry and wildlife majors at Â鶹¹ÙÍø State University for 36 years, and has authored many research publications on the ecology of Â鶹¹ÙÍø’s forests.  He is coauthor of Forest and Shade Trees of Â鶹¹ÙÍø, third edition with Peter J. van der Linden (Â鶹¹ÙÍø, 2011). He lives in Ames, Â鶹¹ÙÍø.