2009-05-022009-05-021988https://hdl.handle.net/10365/3942Phytopathogenic microorganisms.Biological pest control agents.Weeds.Leafy spurge.Reaction of different biotypes of leafy spurge and other plant species to Alternaria tenuissima f. sp. euphorbiae1988 Leafy Spurge Symposium Proceedings; Rapid City, SD; July 13-14, 1988