M. Nayif, S. and H. Mohammed, D. 2023. Spectrophotometric Determination of Isoniazid in Pharmaceutical Preparations Using Oxidative Coupling Reaction with 2,4-dinitrophenylhydrazine. Rafidain Journal of Science. 32, 1 (Mar. 2023), 149–160. DOI:https://doi.org/10.33899/rjs.2023.178227.