Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KAYOIZI Nobuyoshi,On the Grindability of Coals,Journal of the Society of Mechanical Engineers,00214728,The Japan Society of Mechanical Engineers,1959,62,483,583-592,https://cir.nii.ac.jp/crid/1390001205914094208,https://doi.org/10.1299/jsmemag.62.483_583