NORALIA, ERMA. 2013. “FILTRASI ION LOGAM Cr6+ DENGAN MEMBRAN KOMPOSIT KITOSAN SILIKA (FILTRATION METAL ION Cr6+ WITH COMPOSITE CHITOSAN SILICA MEMBRANE)”. Unesa Journal of Chemistry 2 (1). https://doi.org/10.26740/ujc.v2n1.p%p.