Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) R. B. Bryant and N. Curi and C. B. Roth and D. P. Franzmeier,Use of an Internal Standard with Differential X‐ray Diffraction Analysis for Iron Oxides,Soil Science Society of America Journal,0361-5995,Wiley,1983-01,47,1,168-173,https://cir.nii.ac.jp/crid/1363670320248686464,https://doi.org/10.2136/sssaj1983.03615995004700010033x