Ali Ahssan Hamz Najm, Ahmed S. Abbas. “Simple Cloud Point Extraction-Spectrophotometric for the Determination for Lead (II) Using-3-Anilino-1-Phenylimino-Thiourea”. Pakistan Journal of Medical & Health Sciences, vol. 16, no. 04, May 2022, p. 406, doi:10.53350/pjmhs22164406.