N. Ng’ang’a, J. and P. Msumali, G. (2005) “Effects of carbamate and pyrethroid insecticides on cowpea bradyrhizobial population assessed in sand culture and on nitrogen fixation in soil”, Uganda Journal of Agricultural Sciences, 11(1), pp. 9–13. Available at: http://journal.naro.go.ug/index.php/ujas/article/view/315 (Accessed: 21 November 2024).