WASET
    Abubakar Idris and  Nabade Abdullahi Muhammad,  Development of EN338 (2009) Strength Classes for Some Common Nigerian Timber Species Using Three Point Bending Test.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2013, vol. 77(5). 338 - 342
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/16249.