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https://headlines.yahoo.co.jp/hl?a=20181226-00010000-saitama-l11

http://www.itmedia.co.jp/business/articles/1812/23/news011.html

https://headlines.yahoo.co.jp/hl?a=20181225-00010000-doshin-soci

http://blog.livedoor.jp/businesslaw/archives/52532795.html

https://headlines.yahoo.co.jp/hl?a=20181225-00010001-fnnprimev-soci&p=1

http://www.nikkei-science.com/201902_040.html

https://toyokeizai.net/articles/-/256218

http://lawyer.sakura.ne.jp/inhouse/2018/12/24/note20181224/

http://blog.livedoor.jp/mikagetarou/archives/26525634.html

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https://headlines.yahoo.co.jp/hl?a=20181223-00362912-okinawat-oki

https://gigazine.net/news/20181220-rabbit-gene-houseplant-detoxify-air/

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https://headlines.yahoo.co.jp/hl?a=20181221-00000651-san-soci

https://www.jiji.com/jc/article?k=2018122106743&g=soc

https://mainichi.jp/articles/20181217/k00/00m/040/184000c

https://www3.nhk.or.jp/shutoken-news/20181221/0022955.html

https://headlines.yahoo.co.jp/hl?a=20181221-00000572-san-soci

https://headlines.yahoo.co.jp/hl?a=20181221-00009026-bengocom-soci

https://headlines.yahoo.co.jp/hl?a=20181219-00000255-sph-soci

https://mainichi.jp/articles/20181217/k00/00m/040/184000c

https://www.yomiuri.co.jp/politics/20181217-OYT1T50068.html

https://www.asahi.com/articles/ASLDM7G8BLDMUTIL06W.html

https://www.fukuishimbun.co.jp/articles/-/761993

https://headlines.yahoo.co.jp/hl?a=20181219-00040265-houdouk-soci