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  • Radioactive materials are substances that contain unstable atoms, which undergo spontaneous decay, emitting ionising radiation in the process. Calendar #715966112
Radioactive materials are substances that contain unstable atoms, which undergo spontaneous decay, emitting ionising radiation in the process. calendar #715966112

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Poster Calendar (Single Image) Wall Calendar (12 Months)
Enjoy a full view of the full year with a custom poster calendar.
  • - 3 different size
  • - 2 paper stock options
  • - Vivid, full-colour printing
$29.95

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