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.
University of Minnesota, Agricultural Extension Division;
Agricultural Engineering News Letter, number 77.
University of Minnesota, Agricultural Extension Division.
Retrieved from the University of Minnesota Digital Conservancy,
Content distributed via the University of Minnesota's Digital Conservancy may be subject to additional license and use restrictions applied by the depositor.