681 | Add to Reading ListSource URL: upcommons.upc.eduLanguage: English - Date: 2013-10-14 04:47:51
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682 | Add to Reading ListSource URL: www.artificial-gravity.comLanguage: English - Date: 2012-06-08 03:22:27
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683 | Add to Reading ListSource URL: astrogatorsguild.comLanguage: English - Date: 2013-03-07 14:36:35
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684 | Add to Reading ListSource URL: iloa.orgLanguage: English - Date: 2013-11-21 16:14:04
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685 | Add to Reading ListSource URL: iloa.orgLanguage: English - Date: 2012-08-01 15:44:12
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686 | Add to Reading ListSource URL: iloa.orgLanguage: English - Date: 2013-09-23 17:25:00
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687 | Add to Reading ListSource URL: www.iloa.orgLanguage: English - Date: 2008-10-09 22:31:20
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688 | Add to Reading ListSource URL: www.the1963aristarchusevents.comLanguage: English - Date: 2013-08-08 11:05:12
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689 | Add to Reading ListSource URL: 21stcenturysciencetech.comLanguage: English - Date: 2012-11-06 00:38:19
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690 | Add to Reading ListSource URL: ntrs.nasa.govLanguage: English - Date: 2014-05-09 07:05:09
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