Agbo, EA, FU Ugese, and PK Baiyeri. “Vegetative Propagation of African Walnut (<i>Plukenetia conophora</I>) Using Pre-Treated Stem Cuttings of Varied Physiological Ages”. Agro-Science 13, no. 1 (June 19, 2015): 37–43. Accessed August 26, 2026. https://www.ajol.info/index.php/as/article/view/118568.