311 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1998-02-26 08:43:10
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312 | Add to Reading ListSource URL: esd.ny.gov- Date: 2014-06-09 09:42:51
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313 | Add to Reading ListSource URL: doit.maryland.govLanguage: English - Date: 2014-09-05 17:15:20
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314 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1997-02-28 13:58:23
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315 | Add to Reading ListSource URL: www.public-health.uiowa.eduLanguage: English - Date: 2012-11-01 20:06:04
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316 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1998-02-20 06:57:25
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317 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1998-02-19 13:32:20
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318 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1997-03-10 08:32:02
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319 | Add to Reading ListSource URL: esd.ny.govLanguage: English - Date: 2014-06-09 09:41:18
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320 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1997-03-10 09:17:46
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