Cromwell, Gary L.Biehl, LeRoy G.Wilcox, Robert A.Brown, GlennHubbard, DixonPretzer, Dean2019-09-182019-09-181983-3https://hdl.handle.net/11299/2074291 online resource (PDF, 6 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