Instructor
Nancy Stewart
University of Maryland Extension
Wye Research & Education Center
PO Box 169, Queenstown, MD 21658
Phone: 410-827-8056, ext. 107
FAX: 410-827-9039
Email: nstewar1@umd.edu"
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Course developed by
Robert Tjaden
Faculty Emeritus
Environmental Science and Technology Department
University of Maryland
Phone: 410-827-8056 (Wye Research and Education Center)
Phone: 301-405-1179 (College Park)
Email: rtjaden@umd.edu
Julia Klapproth
Natural Resource Extension Assistant
University of Maryland Extension
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Course updated by
Nancy Stewart
Natural Resource Extension
University of Maryland Extension
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Online course design and development
Valorie McAlpin
Executive Director of Online Learning
College of Agriculture and Natural Resources
University of Maryland
Megan Weng and Xin Zhao
Graduate Assistants
College of Agriculture and Natural Resources
University of Maryland
Benny Cheung
IT Programmer Analyst
College of Agriculture and Natural Resources
University of Maryland
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Publication editor
Virginia Gerhart
Associate Editor, College of Agriculture and Natural Resources
University of Maryland Extension
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Publication designers
Karen Laco-Breen, Pete Mazzocchi, and Kerry Clark
Graphic Designers
College of Agriculture and Natural Resources
University of Maryland Extension