Backup source of 2013-02-16 (No. 1)

• Backup list
• View the diff.
• View the diff current.
• View the diff for visual.
• View the backup.
• Go to 2013-02-16.
  • 1 (2013-02-16 (Sat) 15:35:18)
  • 2 (2013-02-16 (Sat) 16:43:19)
  • 3 (2013-02-16 (Sat) 23:47:44)

- 天体衝突とはどのような災害か
--  http://d.hatena.ne.jp/active_galactic/20130216/1360980178