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Item Distribution and Economic Impacts of Leafy Spurge in North Dakota(North Dakota State University, 1983) Messersmith, Calvin G.; Lym, Rodney G.Item Control of Leafy Spurge with Herbicides(North Dakota State University, 1983) Lym, Rodney G.; Messersmith, Calvin G.Item The Leafy Spurge Plant(North Dakota State University, 1983) Messersmith, Calvin G.Item Research Programs for Leafy Spurge Control in the United States and Canada(North Dakota State University, 1983) Messersmith, Calvin G.; Lym, Rodney G.