R. C. WAKAWA. Determination of Changes in Yield and Profitability of Improved Soybean Production in Guinea Nigeria: A Case Study of Borno and Kaduna States. Current Topics in Agricultural Sciences Vol. 4, [S. l.], p. 108–114, 2021. DOI: 10.9734/bpi/ctas/v4/4883F. Disponível em: https://stm.bookpi.org/CTAS-V4/article/view/5139. Acesso em: 19 jun. 2026.