J. A, I., B. A, K., & P. O, O. (2018). Influence of Maize Varieties and Date of Planting Cowpea into Maize/Cowpea Intercropping System in Makurdi, Southern Guinea Savannah, Nigeria. International Journal of Sciences: Basic and Applied Research (IJSBAR), 38(1), 98–113. Retrieved from https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8861