記載者：John on January 02, 2105 at 04:30:28:
元の記事：コンクリートの強度確保 /記載者：渡邉 智裕 on September 02, 1999 at 15:41:59:
I was surfing along and came across your website. I really enjoyed it. Thanks! This site is very informative. I hope to see more in the near future, Wishing you all the best!