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  1. 1
    出版 2003
    “...GF 75 .U55 2003...”
    圖書
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    Understanding environmental issues /
  2. 2
    由 Leakey, Richard E.
    出版 1996
    “...GF 75 .L435...”
    圖書
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    The sixth extinction : biodiversity and its survival /

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