“Detection of Methamphetamine Using Nanobentonite As a Novel Solid Phase Extraction Column Matrix Assisted With Gas Chromatography- Mass Spectroscopy”. Baghdad Science Journal 19, no. 4 (August 1, 2022): 0816. Accessed May 2, 2024. https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/5571.