Usman, N. D., F. I. Idusuyi, E. B. Ojo, and B. Simon. “The Use of Sawdust and Palm Kernel Shell As Substitute for Fine and Coarse Aggregates in Concrete Construction in Developing Countries”. Journal of Chemical, Mechanical and Engineering Practices (JCMEP) 2, no. 3 (December 1, 2012): 51–62. Accessed September 19, 2024. http://icidr.org.ng/index.php/Jcmep/article/view/1091.