OCCURRENCE OF DETERIORATING SEED-BORNE PATHOGENS AND WEEVILS (CALLOSOBRUCHUS MACULATUS(F.) BRUCHIDAE COLEOPTERA) AND THEIR ECONOMIC IMPACTS ON MARKETING OF STORED COWPEA GRAINS IN MAIDUGURI, BORNO STATE - Richard, I. Bwala; Goni, A.; Usman, D.; Sharifah, S. G.; Gaya, H. I. M.; Veronica, N. N. (FUDMA JOURNAL OF SCIENCES, 2023)