381 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2012-04-12 13:35:32
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382 | Add to Reading ListSource URL: www.nps.govLanguage: English - Date: 2006-02-27 15:10:00
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383 | Add to Reading ListSource URL: www.monitoringthefuture.orgLanguage: English - Date: 2013-12-16 09:21:23
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384 | Add to Reading ListSource URL: www.monitoringthefuture.org- Date: 2013-12-16 09:01:07
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385 | Add to Reading ListSource URL: www.monitoringthefuture.orgLanguage: English - Date: 2013-12-16 09:35:54
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386 | Add to Reading ListSource URL: www.monitoringthefuture.org- Date: 2013-12-16 09:03:57
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387 | Add to Reading ListSource URL: www.monitoringthefuture.orgLanguage: English - Date: 2013-12-16 09:29:41
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388 | Add to Reading ListSource URL: www.monitoringthefuture.orgLanguage: English - Date: 2013-12-16 09:34:13
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389 | Add to Reading ListSource URL: www.monitoringthefuture.orgLanguage: English - Date: 2013-12-17 14:43:33
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390 | Add to Reading ListSource URL: www.monitoringthefuture.org- Date: 2013-12-16 09:02:54
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