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Saputri, R. M. D. .; Aurellia, P. M. .; Perwitasari, D. S. . Reduction of Chrom Ion (Cr) With Ion Exchange Resin in Liquid Waste of Leather Tanning . Nusantara Sci. Tech. Proc. 2020, 205-208. https://doi.org/10.11594/nstp.2020.0532.