Hueg, William F., Jr.Otto, Harley J.Bates, D. W.Ryan, Dennis2019-09-182019-09-181956https://hdl.handle.net/11299/2075121 online resource (PDF, 2 pages)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.enReport