DG Marbaniang: Spectrophotometric Determination of Manganese in Ground Water in Shillong City Using Bismuthate Oxidation Method. International Journal of Environmental Protection, 2012, 2. vsk, nro 5, s. 22–26. ISSN 2226-6437Artikkelin verkkoversio.
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M Dusinska et al: Opinion on bismuth citrate. (SCCS-tunnus: SCCS/1499/1) Scientific Committee on Consumer Safety, 13-13-2013. doi:10.2772/74214Artikkelin verkkoversio.
DG Marbaniang: Spectrophotometric Determination of Manganese in Ground Water in Shillong City Using Bismuthate Oxidation Method. International Journal of Environmental Protection, 2012, 2. vsk, nro 5, s. 22–26. ISSN 2226-6437Artikkelin verkkoversio.