Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Oka Shunpei,Separation of Sodium Chloride and Sodium Sulphate from the Sea Water Eliminated Magnesium and Calcium Salts by means of Sodium Hydroxide and Sodium Carbonate,"Bulletin of the Society of Salt Science, Japan",0369-5646,"The Society of Sea Water Science, Japan",1953,7,2,57-65,https://cir.nii.ac.jp/crid/1390282679573361280,https://doi.org/10.11457/swsj1950.7.2_57