Semb, C.Robinson, J.B.D.2015-07-172015-07-171968Robinson, J. B. D., & Semb, G. (1968). Advisory Soil or Plant Analysis and Fertilizer Use I—Comparison of Soil Analysis Methods. East African Agricultural and Forestry Journal. 34(1), 117–137. https://doi.org/10.1080/00128325.1968.116622880012-8325https://kalroerepository.kalro.org/handle/0/5248enhttp://creativecommons.org/licenses/by-nc/3.0/Advisory Soil or Plant Analysis and Fertilizer use 1- Comparison of Soil Analysis MethodsJournal ContributionSoilPlantsanalysisCropshttps://doi.org/10.1080/00128325.1968.11662288