著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Masaharu Nishiwaki,Determination of the age of antarctic blue and fin whales by the colour changes in crystalline lens,Scientific Reports of the Whales Research Institute,00839086,Tokyo : Whales Research Institute,1950-08,,4,115-161,https://cir.nii.ac.jp/crid/1523669555628572928,