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2012-04-25 (Vol 9, No 4)

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5.17~5.19.
NSTA 2012 STEM Forum & Expo(Atlantic City)

6.27~6.30.
ASERA 2012 Conference (U of the Sunshine Coast)

7. 28~8.1
AAPT 2012 Summer Meeting(Philadelphia)

10.18~10.20. NSTA 2012 Area Conference(Louisville)

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