Ullah, M.J., Fattah, Q.A. and Hossain, F. 2008. Effect of potassium napthenate on yield attributing characters and seed yield of cowpea cv. Bari falon-1 (<i>Vigna unguiculata</i> (L.) Walp.) grown under early <i>Rabi</i> season. Bangladesh Journal of Botany. 36, 1 (Nov. 2008), 29–32. DOI:https://doi.org/10.3329/bjb.v36i1.1545.