81 | Add to Reading ListSource URL: www.nttc.eduLanguage: English - Date: 2004-07-19 11:02:22
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82 | Add to Reading ListSource URL: manufacturing.govLanguage: English - Date: 2013-05-08 16:43:00
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83 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-14 15:37:03
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84 | Add to Reading ListSource URL: www.nrel.govLanguage: English - Date: 2013-12-23 17:03:01
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85 | Add to Reading ListSource URL: smart.mit.eduLanguage: English - Date: 2013-10-31 04:24:53
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86 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-09-14 10:52:30
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87 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 09:01:13
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88 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-05-07 07:26:52
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89 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-06-12 16:30:17
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90 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-01-31 14:55:24
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