Peters, W. H.Fitch, J. B.Searles, H. R.Morris, W. E.2014-12-302014-12-301943-06https://hdl.handle.net/11299/16856016 pages; includes 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-USNewsletter or Bulletin