Mowa, E. M. and Maas, E. (2017) “Influence of resting period on fruits and secondary tubers of Harpagophytum procumbens in Namibia”, International Science and Technology Journal of Namibia, pp. 073–090. Available at: https://journals.unam.edu.na/index.php/ISTJN/article/view/1200 (Accessed: 14 May 2024).