Ash, Cynthia L.Draper, Martin A.Lamey, H. ArthurGallenberg, Dale J.2010-09-222010-09-221996Ash, C.L., Draper, M.A., Lamey, H.A. and Gallenberg, D.J. 1996. Diseases of Trees and Shrubs: Color Diagnostic Guide. St. Paul, MN: University of Minnesota Extension Service. FO-6426-S.https://hdl.handle.net/11299/9403412 p. Photographs.This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.en-USTreesShrubsOther