Browsing North Dakota Farm Research / Bimonthly Bulletin by Author "Kopp, Dennis D."
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Livestock Insecticide Ear Tag Trials 1982
Meyer, H. J.; Kopp, Dennis D.; Meyer, H. J.; Kopp, Dennis D. (North Dakota State University, 1983) -
North Dakota Livestock Insecticide Ear Tag Trials -1983
Carlson, R.B.; Meyer, H.J.; Kopp, Dennis D.; Carlson, R.B.; Meyer, H.J.; Kopp, Dennis D. (North Dakota State University, 1984)