Studies upon the blackleg disease of the potato, with special reference to the relationship of the causal organisms Morse, Warner Jackson, 1872- creator text book Washington Govt. print. off 1917 1917
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ENG Diseases and pests Potatoes SB608.P8 M85 https://www.biodiversitylibrary.org/bibliography/37243 17021799 10.5962/bhl.title.37243 DLC