21 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-01-19 10:19:30
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22 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-01-13 14:01:32
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23 | Add to Reading ListSource URL: aforrester.bol.ucla.eduLanguage: English - Date: 2006-01-08 20:23:05
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24 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-01-19 09:40:43
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25 | Add to Reading ListSource URL: www.uspto.govLanguage: English - Date: 2013-04-05 11:08:38
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26 | Add to Reading ListSource URL: www.mtialbany.comLanguage: English - Date: 2014-05-27 18:26:29
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27 | Add to Reading ListSource URL: www.charles-hatchett.comLanguage: English - Date: 2013-10-14 11:36:20
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28 | Add to Reading ListSource URL: web.ornl.govLanguage: English - Date: 2010-11-24 08:47:36
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29 | Add to Reading ListSource URL: www.manoir-industries.comLanguage: English - Date: 2013-10-21 11:09:11
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30 | Add to Reading ListSource URL: tobias-lib.uni-tuebingen.deLanguage: English - Date: 2003-07-16 06:45:39
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