University of Minnesota. Agricultural Extension Service. Department of Agricultural and Applied Economics2014-12-302014-12-301980https://hdl.handle.net/11299/16905116 pages; published as a special insert in the September 15, 1979 issue of The Farmer. 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