21 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1997-07-08 08:36:05
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22 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2000-10-30 15:11:37
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23 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1996-07-15 09:30:08
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24 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1996-07-15 09:29:52
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25 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1996-09-12 07:53:52
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26 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2001-01-26 07:24:14
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27 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1998-03-03 13:20:34
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28 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1997-09-18 10:27:34
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29 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2000-02-15 10:40:07
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30 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1996-07-15 09:29:50
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