Hutchison, William D.; Pfleger, Frank L.; Hertz, Leonard B.; Pokorny, J. D..
Commercial vegetable weed, insect, and disease control guide: asparagus, cucumbers, melons, pumpkins, squash, rhubarb (Revised 1990).
University of Minnesota. Agricultural Extension Service.
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.