Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
"当山, 清善 and Toyama, Seizen",Studies on the utilization of by-product of pineapple : III. On the production of stem bromelain powder (Department of Agricultural Chemistry),The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus,0370-4246,琉球大学農学部,1969-10-01,,16,141-146,https://cir.nii.ac.jp/crid/1050011251822819712,