51 | Add to Reading ListSource URL: www.drink-water-eng-sci.netLanguage: English - Date: 2016-05-18 09:03:15
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52 | Add to Reading ListSource URL: sciencejedi.comLanguage: English - Date: 2014-01-14 02:17:30
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53 | Add to Reading ListSource URL: pribilof.noaa.govLanguage: English - Date: 2013-07-18 15:22:52
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54 | Add to Reading ListSource URL: seaduckjv.orgLanguage: English - Date: 2015-02-26 18:10:32
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55 | Add to Reading ListSource URL: members.upnaway.comLanguage: English - Date: 2013-08-06 00:35:04
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56 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2015-10-20 10:41:36
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57 | Add to Reading ListSource URL: www.crystalgeyser.comLanguage: English - Date: 2016-05-18 07:34:06
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58 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2015-07-07 15:29:10
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59 | Add to Reading ListSource URL: www.kooschadler.comLanguage: English - Date: 2015-04-10 17:31:58
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60 | Add to Reading ListSource URL: www.atsdr.cdc.govLanguage: English - Date: 2012-04-13 13:17:14
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