Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TAKENOUCHI Sukune,Origin of Iron Ores,Tetsu-to-Hagane,00211575,The Iron and Steel Institute of Japan,1980,66,6,724-729,https://cir.nii.ac.jp/crid/1390001205182349824,https://doi.org/10.2355/tetsutohagane1955.66.6_724