641 | Add to Reading ListSource URL: digital.library.okstate.eduLanguage: English - Date: 2009-01-09 16:57:46
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642 | Add to Reading ListSource URL: digital.library.okstate.eduLanguage: English - Date: 2009-01-09 16:58:38
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643 | Add to Reading ListSource URL: digital.library.okstate.eduLanguage: English - Date: 2009-01-09 16:59:00
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644 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-05-14 07:10:27
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645 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-06-06 15:01:17
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646 | Add to Reading ListSource URL: nepis.epa.govLanguage: English |
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647 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2005-09-30 07:09:32
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648 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2005-09-30 07:09:30
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649 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2005-09-30 07:09:30
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650 | Add to Reading ListSource URL: www.nal.usda.govLanguage: English |
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