TY - BOOK AU - Boughey, A.S. TI - The cause of variation in the incidence of blackarm disease of cotton in the Sudan Gezira U1 - P 571.929 21st ed. PY - 1947/// CY - Surrey PB - The Imperial Mycological Institute KW - Cotton KW - Fungi KW - Fungi diseases KW - Plant diseases KW - Plant pathology N1 - Bibliography: p 7 ER -