Jimoh W.L.O., Imam Mohammed Mahmud. Analysis of Iron and Zinc in Soil and Spinach Grown in Irrigated Farmland of Kaduna Metropolis Nigeria. IJRCE [Internet]. 2011 Sep. 30 [cited 2024 Nov. 24];1(2):141-6. Available from: https://ijrce.org/index.php/ijrce/article/view/100