Temitope Olabisi Abodunrin and Yemisi T. Afolabi (trans.) (2020) “Assessment of the Effect of Glycine, Oxalic Acid and Nitrogen-Phosphorus-Potassium (NPK) Fertilizer as Nutrient Supplement Using Phosphate and OxalicAcid as Indices”, Pakistan Journal of Analytical & Environmental Chemistry, 21(1), pp. 102 – 106. doi:10.21743/pjaec/2020.06.12.