551 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2013-09-06 08:11:21
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552 | Add to Reading ListSource URL: www.cdc.govLanguage: English - Date: 2013-02-07 13:55:00
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553 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2005-08-03 10:29:33
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554 | Add to Reading ListSource URL: www.ncnr.nist.govLanguage: English - Date: 2003-11-10 15:28:37
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555 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-09-03 17:23:21
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556 | Add to Reading ListSource URL: www.nrc-cnrc.gc.caLanguage: English - Date: 2012-03-30 14:18:03
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557 | Add to Reading ListSource URL: www.afn.caLanguage: English - Date: 2011-06-01 14:51:52
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558 | Add to Reading ListSource URL: www-ssrl.slac.stanford.eduLanguage: English - Date: 2008-03-27 16:42:24
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559 | Add to Reading ListSource URL: agr.wa.govLanguage: English - Date: 2009-01-29 19:12:48
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560 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2014-04-04 11:19:52
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