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[ù] Sky & Telescope
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[] SKEPTIC ƽ (̱)
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[] Ranger Rick
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[] PSYCHOLOGY TODAY
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[ù] BBC Science Focus ( BBC Focus)
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[] Astronomy
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[ù] ()
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[ù] Ԫ(ڿ )
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[ù] Ρ学
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[ù] 経 (ϰ ̾)