61 | Add to Reading ListSource URL: www.scienceandsociety.orgLanguage: English - Date: 2009-10-19 17:11:31
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62 | Add to Reading ListSource URL: www.garfield.library.upenn.eduLanguage: English - Date: 2001-05-15 17:03:02
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63 | Add to Reading ListSource URL: www.litsci.orgLanguage: English - Date: 2007-12-30 18:47:16
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64 | Add to Reading ListSource URL: www.garfield.library.upenn.eduLanguage: English - Date: 1999-10-01 15:42:06
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65 | Add to Reading ListSource URL: assets.cambridge.orgLanguage: English - Date: 2010-06-17 05:31:10
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66 | Add to Reading ListSource URL: www.astro-udec.clLanguage: English - Date: 2012-03-01 12:25:08
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67 | Add to Reading ListSource URL: www.noao.eduLanguage: English - Date: 2006-08-30 17:18:13
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68 | Add to Reading ListSource URL: www.asa3.orgLanguage: English - Date: 2012-03-12 23:50:47
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69 | Add to Reading ListSource URL: www.icr.orgLanguage: English - Date: 2014-10-21 11:20:16
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70 | Add to Reading ListSource URL: phys.orgLanguage: English - Date: 2015-04-17 01:25:37
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