KIBU2021-09-032021-09-032021-01-04http://erepository.kibu.ac.ke/handle/123456789/3008ASS 222:Soil fertility and plant nutritionenAttribution-NonCommercial-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-sa/3.0/us/ASS 222:Soil fertility and plant nutritionSoil fertility and plant nutritionASS 222Other