821 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2009-02-02 08:26:45
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822 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-03-29 16:19:06
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823 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-03-07 08:20:50
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824 | Add to Reading ListSource URL: www.arrl.orgLanguage: English - Date: 2010-02-01 07:39:46
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825 | Add to Reading ListSource URL: ewh.ieee.orgLanguage: English - Date: 2010-10-21 15:31:44
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826 | Add to Reading ListSource URL: commons.bcit.caLanguage: English - Date: 2007-02-09 17:30:13
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827 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-01-19 08:27:41
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828 | Add to Reading ListSource URL: global.epson.comLanguage: English - Date: 2012-08-27 00:28:36
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829 | Add to Reading ListSource URL: www.gpo.govLanguage: English - Date: 2014-03-04 16:07:39
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830 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-02-01 13:39:19
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