Abdulrahim, A. T., S. Abdulkareem, S. A. Abdulraheem, and W. J. Mohammed. “Thermal and Mechanical Properties of Clay and Drop-Off of Ceiba Pentandra (Kapok) Plant Wool Mixture”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT, Vol. 16, no. 2, June 2020, pp. 415-22, https://www.azojete.com.ng/index.php/azojete/article/view/232.