“Assessment of the Relationship Between Heavy Metal Concentrations in Soil and Tea Leaves Grown at Amani in Tanga Region by Energy Dispersive X-Ray Fluorescence (EDXRF) ”. Journal of Humanities & Social Science (JHSS) 10, no. 4 (December 9, 2021). Accessed December 21, 2024. http://ojs3.bongotech.info/index.php/jehs/article/view/103.