Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) IWASE Hiroshi and SUGIYAMA Taeko,Extraction conditions of organic acids in aqueous solution,BUNSEKI KAGAKU,05251931,The Japan Society for Analytical Chemistry,1975,24,10,668-671,https://cir.nii.ac.jp/crid/1390282679331843840,https://doi.org/10.2116/bunsekikagaku.24.668