81 | Add to Reading ListSource URL: sites.nationalacademies.orgLanguage: English - Date: 2014-10-14 10:40:00
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82 | Add to Reading ListSource URL: 6a5c5bfb3db64530af0c-2b8f5d411c6d7b49cc2ea2e9ad318ab7.r95.cf1.rackcdn.comLanguage: English - Date: 2014-09-24 11:41:20
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83 | Add to Reading ListSource URL: phys.orgLanguage: English - Date: 2015-01-05 01:00:18
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84 | Add to Reading ListSource URL: sites.nationalacademies.orgLanguage: English - Date: 2014-10-25 10:46:55
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85 | Add to Reading ListSource URL: democrats.science.house.govLanguage: English - Date: 2014-12-10 09:47:34
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86 | Add to Reading ListSource URL: sites.nationalacademies.orgLanguage: English - Date: 2014-10-25 10:46:41
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87 | Add to Reading ListSource URL: mepag.nasa.govLanguage: English - Date: 2005-06-14 03:01:53
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88 | Add to Reading ListSource URL: www.nasa.govLanguage: English - Date: 2014-10-29 15:06:24
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89 | Add to Reading ListSource URL: www.ae.utexas.eduLanguage: English - Date: 2013-11-18 15:15:55
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90 | Add to Reading ListSource URL: www.nasa.govLanguage: English - Date: 2014-10-16 08:59:04
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