Bentonite from the Nalchik deposit and the possibilities of its use as a cationic adsorbent Vezentsev A.I., Efendiev B.Sh., Nesterova L.L., Shaidorova G.M., Vyalkin A.A. https://doi.org/10.58224/2619-0575-2025-8-2-2 Download PDF 2-shajdorova