Vallée, G., M’Biandoun, M. and Forest, F. (1996) “Direct sowing Systems in the Garoua zone (North Cameroun)”, Cahiers Agricultures, 5(3), pp. 161–169 (1). Available at: https://revues.cirad.fr/index.php/cahiers-agricultures/article/view/29942 (Accessed: 3 November 2024).