Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) IWASA Kiyoshi and ÔTA Isao and TORII Hideichi,Improvement of Official Chemical Analysis of Tea (Part 3),Chagyo Kenkyu Hokoku (Tea Research Journal),0366-6190,Japanese Society of Tea Science and Technology,1970-03-31,1970,33,69-73,https://cir.nii.ac.jp/crid/1390282679250984448,https://doi.org/10.5979/cha.1970.33_69