NTingo, Théodore, and Georges-Raphaël Mandimba. 1994. “Effects of Fertiliser Dressing on Yield and Nodulation of ‘Phaseolus’ Spp. In Kombe-Brazzaville Soils”. Cahiers Agricultures 3 (3):195-98. https://revues.cirad.fr/index.php/cahiers-agricultures/article/view/29838.