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.
Washburn, F. L..
Some useful birds and others found in Minnesota, their economic relations to the agriculturist: A revised reprint of State Entomologist's Circular 43.
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.