61 | Add to Reading ListSource URL: www.sofia.usra.eduLanguage: English - Date: 2014-12-08 17:13:03
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62 | Add to Reading ListSource URL: www.skillsns.caLanguage: English - Date: 2015-01-02 11:09:38
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63 | Add to Reading ListSource URL: www.opdv.ny.govLanguage: English - Date: 2012-07-31 17:08:38
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64 | Add to Reading ListSource URL: www.nasa.govLanguage: English - Date: 2013-04-30 20:23:54
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65 | Add to Reading ListSource URL: www.trc.govt.nzLanguage: English - Date: 2012-12-11 18:35:15
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66 | Add to Reading ListSource URL: www.nist.govLanguage: English - Date: 2011-03-10 13:06:53
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67 | Add to Reading ListSource URL: kidsciencechallenge.comLanguage: English - Date: 2012-08-18 04:20:20
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68 | Add to Reading ListSource URL: puyallup.wsu.eduLanguage: English - Date: 2009-01-24 00:14:32
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69 | Add to Reading ListSource URL: www.hookedonscience.orgLanguage: English - Date: 2014-09-19 23:59:51
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70 | Add to Reading ListSource URL: phys.orgLanguage: English - Date: 2014-11-26 06:09:33
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