471 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-07-02 14:50:35
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472 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1996-10-10 08:27:04
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473 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-05-09 14:05:59
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474 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-03-14 14:05:58
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475 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-01-31 09:57:05
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476 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-01-31 09:59:13
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477 | Add to Reading ListSource URL: www.hse.gov.ukLanguage: English - Date: 2005-11-28 11:25:16
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478 | Add to Reading ListSource URL: www.eupvplatform.orgLanguage: English - Date: 2013-05-13 04:34:54
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479 | Add to Reading ListSource URL: www.dol.gov- Date: 2014-07-25 15:51:03
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480 | Add to Reading ListSource URL: www.ihes.frLanguage: English - Date: 2010-01-14 05:31:07
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