University of Minnesota. Agricultural Extension Service.Mizicko, JohnStienstra, Ward C.2017-11-172017-11-171977https://hdl.handle.net/11299/191027This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.enDutch Elm DiseaseTree, fungusCeratocystis ulmiElm bark beetlesNewsletter or Bulletin