Hayrapetyan, S.S. et al. 2021. COMPOSITE SORBENTS BASED ON DIATOMITE-BENTONITE AND PAPER-PULP FOR THE REMOVAL OF HEAVY METALS. Proceedings of the YSU B: Chemical and Biological Sciences. 55, 2 (255) (Aug. 2021), 125–135. DOI:https://doi.org/10.46991/PYSU:B/2021.55.2.125.