Abubakar, A., S. Aminu, and A. Zilkifili. “ESTIMATION OF MAIZE SEED REPLACEMENT RATE AMONG SMALLHOLDER FARMERS IN NORTH WEST, NIGERIA”. NABDA JOURNAL OF BIOTECHNOLOGY RESEARCH, vol. 1, no. 1, Aug. 2023, pp. 73-78, http://journals.nabda.gov.ng/njbr/article/view/37.