Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Watanabe ShirĂ´,Fractional Determination of Various Elements and Rational Analysis in Manganese and Reduced Manganese Ores by Chemical Analysis,Journal of the Japan Institute of Metals and Materials,00214876,The Japan Institute of Metals and Materials,1960,24,8,483-486,https://cir.nii.ac.jp/crid/1390282681457955712,https://doi.org/10.2320/jinstmet1952.24.8_483