Oluwasola, B. T., B. Kehinde O, B. O. O, and O. S. O. “Value Addition and Consraint of Hardwood Timber Industry in Ijebu Division of Ogun State, Nigeria”. The International Journal of Science & Technoledge, vol. 7, no. 10, Jan. 2019, doi:10.24940/theijst/2019/v7/i1/ST1901-028.