Onyekanihu, A. L., Chukwu , V. E., Malang, S. K. and Opara, M. N. (2025) “ northern Guinea savannah zone of Nigeria”., TROPICAL JOURNAL OF ENGINEERING, SCIENCE AND TECHNOLOGY, 4(issue 1), pp. 97–112. Available at: https://tjest.org.ng/index.php/journal/article/view/261 (Accessed: 20 November 2025).