The previous page is sending you to https://www.hops.hokudai.ac.jp/2018/02/02/%E5%B9%B3%E6%88%9030%E5%B9%B4%E5%BA%A6-%E5%85%A5%E5%AD%A6%E8%A9%A6%E9%A8%93%EF%BC%881%E6%9C%88%E5%AE%9F%E6%96%BD%EF%BC%89%E3%81%AE%E5%90%88%E6%A0%BC%E8%80%85%E3%81%AE%E5%8F%97%E9%A8%93%E7%95%AA/.

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