Browsing by Author "Kopp, D. D."
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Item 1981 Livestock Insecticide Ear Tag Demonstration For Horn Fly Control(North Dakota State University, 1982) Kopp, D. D.; Meyer, H.J.; Martin, R. J.Item Sunflower Midge -1982(North Dakota State University, 1983) Busacca, J. D.; Kopp, D. D.