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WILLIAMS, W. S.; NAHUNNARO, H.; CHIMBEKUJWO I.B; AHMAD, A. STUDIES OF DISEASE INCIDENCE AND SEVERITY CAUSED BY CERCOSPORA LEAF SPOT ON DIFFERENT COWPEA (Vigna Unguigulata L.Walp.) VARIETIES IN YOLA, ADAMAWA STATE, NIGERIA. BIMA 2023, 7, 38-47.