Ash, 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.
12 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.
Ash, Cynthia L.; Draper, Martin A.; Lamey, H. Arthur; Gallenberg, Dale J..
Diseases of Trees and Shrubs: Color Diagnostic Guide.
St. Paul, MN: University of Minnesota Extension Service.
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