AKINBILE, O. O., ADIAMO, I. A., ELUMALERO, G. O., OLALEKAN, O. J., & DANIEL, A. I. (2022). Nitrogen fixation and yield of two cowpea varieties under legume-cereal cropping sequence. NIGERIAN JOURNAL OF SCIENCE AND ENVIRONMENT, 19(2). Retrieved from https://delsunjse.com/index.php/njse/article/view/12