531 | Add to Reading ListSource URL: portionteller.comLanguage: English - Date: 2014-05-30 16:55:37
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532 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1997-09-18 10:27:34
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533 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2013-02-15 10:19:06
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534 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2015-03-26 09:27:34
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535 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2009-07-29 11:43:02
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536 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2015-05-29 16:02:58
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537 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2000-02-15 10:40:07
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538 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2003-02-12 06:22:52
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539 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2015-04-29 16:28:51
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540 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2013-05-10 15:11:39
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