Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 官 秀慶,Cultivation and Breeding of Geranium thunbergii (II) : Effect of Mulching Cultivation on the Yield and the Tannin Content,生薬学雑誌 = The Japanese journal of pharmacognosy,00374377,東京 : 日本生薬学会,1991-03,45,1,p6-11,https://cir.nii.ac.jp/crid/1520009409364534144,