Mokrousova, Olena, Olena Okhmat, and Maryna Zhaldak. 2022. “Study of Ecological Technology of Leather Tanningwith the Use of Modified Montmorilonite”. Personality and Environmental Issues 1 (January): 47-51. https://doi.org/10.31652/2786-6033-2022-1(1)-47-51.