KIBU2022-10-132022-10-132022-05-24http://erepository.kibu.ac.ke/handle/123456789/5990SPM 312:Materials testing and evalutionenAttribution-NonCommercial-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-sa/3.0/us/SPM 312:Materials testing and evalutionSPM 312Materials testing and evalution