Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kohayakawa Toshitsugu,Foundamental Studies on Papaver Culture 5 : Easy determination of morphine and codein by HgBr2,The science reports of the Hyogo University of Agriculture. Series agriculture,03676021,Kobe University,1959,4,1,41-43,https://cir.nii.ac.jp/crid/1570572702972732160,