61 | Add to Reading ListSource URL: college.indiana.eduLanguage: English - Date: 2012-08-30 13:30:50
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62 | Add to Reading ListSource URL: globalchange.mit.eduLanguage: English - Date: 2014-09-02 12:53:18
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63 | Add to Reading ListSource URL: www.blm.govLanguage: English - Date: 2012-02-03 12:48:36
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64 | Add to Reading ListSource URL: www.blm.govLanguage: English - Date: 2011-10-28 10:37:38
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65 | Add to Reading ListSource URL: www.nrmsc.usgs.govLanguage: English - Date: 2013-03-06 12:02:28
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66 | Add to Reading ListSource URL: www.tug.orgLanguage: English - Date: 2014-07-22 19:32:24
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67 | Add to Reading ListSource URL: www.history.navy.milLanguage: English - Date: 2011-01-24 15:26:41
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68 | Add to Reading ListSource URL: tug.orgLanguage: English - Date: 2014-07-22 19:32:24
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69 | Add to Reading ListSource URL: nrmsc.usgs.govLanguage: English - Date: 2013-03-06 12:02:28
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70 | Add to Reading ListSource URL: www.child-encyclopedia.comLanguage: English - Date: 2013-09-20 14:43:14
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