“Nitrogen use Efficiency of Soil and Foliar Application of 15n Labelled Urea with or Without Inoculation and Micronutrients by Groundnut (Arachis Hypogaea L) in a Semi-Arid Environment ”, JUST, vol. 16, no. 1 & 2, Jan. 2016, doi: 10.4314/just.v16i1 & 2.913.