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Course categories

Miscellaneous 
 Pesticide Certification LessonsThis course allows guest users to enter
 Medicine. Energy. Food.This course requires an enrolment key
Ohio Watershed Academy 
 Ohio Watershed Academy 2009This course allows guest users to enterThis course requires an enrolment key
Plant Pathology 
 Field and Woodland FungiThis course requires an enrolment keySummary
 Sick Plants and a Hungry WorldThis course requires an enrolment keySummary
 Sanitation and PhytosanitationThis course allows guest users to enterSummary
 Plant Diseases: Their Impact and HistoryThis course requires an enrolment keySummary