“SORPTION OF Co2+, Cu2+, Zn2+ and Mn2+ METAL IONS FROM AQUEOUS SOLUTIONS ON ANIONIC SURFACTANT-MODIFIED BENTONITE”. 2019. Proceedings of the YSU B: Chemical and Biological Sciences 53 (2 (249): 81-85. https://doi.org/10.46991/PYSUB.2019.53.2.081.