51 | Add to Reading ListSource URL: www.geosociety.orgLanguage: English - Date: 2010-08-23 11:22:32
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52 | Add to Reading ListSource URL: teacheratsea.noaa.govLanguage: English - Date: 2014-03-18 16:43:32
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53 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2013-08-15 13:32:58
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54 | Add to Reading ListSource URL: www.geosociety.orgLanguage: English - Date: 2010-04-15 17:39:53
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55 | Add to Reading ListSource URL: profile.usgs.govLanguage: English - Date: 2012-09-19 17:09:18
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56 | Add to Reading ListSource URL: mineralsciences.si.eduLanguage: English - Date: 2014-03-21 14:55:17
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57 | Add to Reading ListSource URL: home.slac.stanford.eduLanguage: English - Date: 2010-12-02 12:40:49
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58 | Add to Reading ListSource URL: www.scienceinschool.orgLanguage: English - Date: 2010-11-22 15:46:31
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59 | Add to Reading ListSource URL: web.uni-plovdiv.bgLanguage: English - Date: 2013-09-08 13:04:36
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60 | Add to Reading ListSource URL: www.sciencemag.orgLanguage: English |
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