CHARACTERISATION AND GRADING OF THREE SELECTED TIMBER SPECIES GROWN IN KWARA STATE NIGERIA ACCORDING TO EN 338 (2009) FOR STRUCTURAL USE. NIJOTECH [Internet]. 2018 Mar. 31 [cited 2026 Apr. 19];37(2):322-9. Available from: https://mail.nijotech.com/index.php/nijotech/article/view/1662