University of Minnesota. Agricultural Extension Service.Phillipsen, William J.Ascerno, Mark E.2017-11-172017-11-171980https://hdl.handle.net/11299/191054This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.enTrees, diseasesTrees, pestsElm Bark BeetleNewsletter or Bulletin