31 | Add to Reading ListSource URL: www.azdeq.govLanguage: English - Date: 2011-09-20 11:46:41
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32 | Add to Reading ListSource URL: www.blm.govLanguage: English - Date: 2014-09-09 20:17:30
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33 | Add to Reading ListSource URL: www.nmarchaeology.orgLanguage: English - Date: 2012-11-04 13:46:37
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34 | Add to Reading ListSource URL: www.waterquality.utah.govLanguage: English - Date: 2014-03-07 17:36:42
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35 | Add to Reading ListSource URL: www.waterquality.utah.govLanguage: English - Date: 2014-03-10 10:37:44
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36 | Add to Reading ListSource URL: dnr.alaska.govLanguage: English - Date: 2004-01-15 16:34:38
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37 | Add to Reading ListSource URL: www.doi.govLanguage: English - Date: 2014-06-24 16:08:42
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38 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2007-04-02 14:08:26
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39 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-10-03 11:02:25
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40 | Add to Reading ListSource URL: digital.library.okstate.eduLanguage: English - Date: 2009-01-09 17:02:23
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