Redirect Notice
 The previous page is sending you to https://scholar.archive.org/work/hnyc3xaiengf3e3ew55qcvs7dy/access/wayback/https://www.jstage.jst.go.jp/article/ojjscn1969/2/2/2_2_141/_pdf.

 If you do not want to visit that page, you can return to the previous page.