Milton, F. ThomasHendricks, Lewis T.Brevik, TheodoreStegmeir, Paul B.2014-12-302014-12-301979https://hdl.handle.net/11299/16904532 pages; includes photographs, maps and drawings. 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