1 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2012-04-11 16:12:34
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2 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2012-04-12 12:16:04
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3 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2011-04-13 11:44:45
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4 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2011-01-11 11:51:29
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5 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2012-04-12 13:35:31
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6 | Add to Reading ListSource URL: www.nist.govLanguage: English - Date: 2012-12-07 13:55:26
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