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Publication approved by Bureau of Plant Industry, Soils, and Agricultural Engineering, United States Department of Agriculture; the North Dakota Agricultural Experiment Station; and the North Dakota State Seed Department.
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Hoyman, W.G. A method of indexing potatoes for virus X by use of petiole or tuber juice. American Potato Journal 28, 713–721 (1951). https://doi.org/10.1007/BF03030754
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DOI: https://doi.org/10.1007/BF03030754