KIBU2023-10-192023-10-192023-04-17http://erepository.kibu.ac.ke/handle/123456789/9577SPM 412: Polymers IenAttribution-NonCommercial-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-sa/3.0/us/SPM 412: Polymers ISPM 412Polymers IOther