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    Consumption of ozone depleting substances cut by half

    Published in Manila Times (2005)
    Article
  3. 3

    Cars using CFC banned next year by Calumpita, Ronnie E.

    Published in Manila Times (2005)
    Article
  4. 4

    Grant to help reduce CFC use

    Published in Manila Times (2005)
    Article
  5. 5

    DENR tags 74 institutes for banned ozone substances

    Published in Manila Times (2000)
    Article
  6. 6

    Ozone protection in the United States elements of success

    Published 1996
    Book
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    Saving the ozone layer a global task.

    Published 1990
    Book

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