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    Chlorofluorocarbons Alvarez, Jose

    发表在 Gadgets (2016)
    文件
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    RP joins global celebration of ozone month Calalo, Arlie

    发表在 Daily Tribune (2012)
    文件
  4. 4

    Ozone L hindi na virgin, nang dahil sa iyo Ancheta, Constante Pablo

    发表在 Liwayway (2009)
    文件
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    Worst-case scenarios Sunstein, Cass R.

    出版 2007
    图书
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    Are we depleting our ozone layer? (article). Tacio, Henrylito D.

    出版 2006
    Analytics
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