481 | Add to Reading ListSource URL: www.handsontheland.orgLanguage: English - Date: 2013-01-25 00:27:41
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482 | Add to Reading ListSource URL: yosemite.epa.govLanguage: English - Date: 2014-01-28 13:05:19
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483 | Add to Reading ListSource URL: www.biomonitoring.ca.govLanguage: English - Date: 2014-07-01 13:08:02
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484 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-10-18 10:57:22
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485 | Add to Reading ListSource URL: www.waterquality.utah.govLanguage: English - Date: 2014-03-10 11:41:13
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486 | Add to Reading ListSource URL: parks.ny.govLanguage: English - Date: 2011-11-22 10:14:55
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487 | Add to Reading ListSource URL: yosemite.epa.govLanguage: English - Date: 2014-01-28 13:05:19
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488 | Add to Reading ListSource URL: parks.ny.govLanguage: English - Date: 2011-11-22 10:05:52
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489 | Add to Reading ListSource URL: www.state.in.usLanguage: English - Date: 2014-07-17 15:34:30
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490 | Add to Reading ListSource URL: www.pwrc.usgs.govLanguage: English - Date: 2013-01-15 08:10:46
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