Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
安井 志郎,Auscultation and Stethography of the Fetal Heart Sound by Amplifying Method,日本産科婦人科学会雑誌 = Acta obstetrica et gynaecologica Japonica,03009165,東京 : 日本産科婦人科学会,1950-12,2,12,31-35,https://cir.nii.ac.jp/crid/1520853835537555456,