Spray calendar Britton, Wilton Everett, 1868-1939 creator Clinton, G. P. (George Perkins), 1867-1937 contributor text book [New Haven] Connecticut Agricultural Experiment Station 1915 1915
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ENG Connecticut Control Diseases and pests Fruit Spraying and dusting in agriculture Bulletin (Connecticut Agricultural Experiment Station), 183 https://www.biodiversitylibrary.org/bibliography/50923 19275206 10.5962/bhl.title.50923 RQF