Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ando A,"JLk‐1, JLs‐1 and JDo‐1, GSJ rock reference samples of the “Sedimentary rock series”",Bull Geol Surv Jpn,,,1990,41,1,27,https://cir.nii.ac.jp/crid/1370572092632773890,