Don't have Telegram yet? Try it now!
http://funyakofunyao.click/2018/07/26/r-for-data-science%e3%81%ae%e4%be%8b%e9%a1%8c%e3%82%92%e8%a7%a3%e3%81%8f-chapter-11-data-import/
R for Data Scienceの例題を解く- Chapter 11 Data Import