Zubairu, P. T., A. B. Hassan, R. A. Muriana, and N. A. Musa. “Effect of Shea Nutshell Ash on the Mechanical Properties of Cast Al6061”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT 17, no. 1 (March 1, 2021): 1-8. Accessed March 29, 2024. https://azojete.com.ng/index.php/azojete/article/view/399.