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By: Ludwig, R. A. (Ralph Antony), - University of Alberta. Department of Field Crops.Edition:Publication info: [1939]Volume:Series:Holding Institution: University of Alberta LibrarySubjects: Phytopathogenic microorganisms Soil microbiology Soilborne plant pathogensBHL Collections:
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By: Cromarty, Robert William, - University of Alberta. Dept. of Plant Science.Edition:Publication info: [1960]Volume:Series:Holding Institution: University of Alberta LibrarySubjects: Soilborne plant pathogensBHL Collections: