w*s
1 楼
Could anyone please comment or provide further reference about the topic of
氟 - water fluoridation?
Here are some online materials revealing on on-going debate:
这两段视频:
http://video.google.com/videoplay?docid=7319752042352089988
http://video.google.com/videoplay?docid=-7984669833566646476
以及这两段讨论:
http://answers.yahoo.com/question/index?qid=20071215235738AALUTq6
http://boards.historychannel.com/thread.jspa?threadID=800000240&messageID=800007763
氟 - water fluoridation?
Here are some online materials revealing on on-going debate:
这两段视频:
http://video.google.com/videoplay?docid=7319752042352089988
http://video.google.com/videoplay?docid=-7984669833566646476
以及这两段讨论:
http://answers.yahoo.com/question/index?qid=20071215235738AALUTq6
http://boards.historychannel.com/thread.jspa?threadID=800000240&messageID=800007763