31 | Add to Reading ListSource URL: phys.orgLanguage: English - Date: 2014-10-26 21:24:50
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32 | Add to Reading ListSource URL: www.usbr.govLanguage: English - Date: 2012-09-12 14:42:49
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33 | Add to Reading ListSource URL: www.twdb.state.tx.usLanguage: English - Date: 2012-01-09 16:37:27
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34 | Add to Reading ListSource URL: www.waterboards.ca.govLanguage: English - Date: 2014-03-19 12:22:38
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35 | Add to Reading ListSource URL: www.usbr.govLanguage: English - Date: 2014-02-02 13:56:21
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36 | Add to Reading ListSource URL: democrats.naturalresources.house.govLanguage: English - Date: 2012-04-17 13:42:29
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37 | Add to Reading ListSource URL: www.istc.illinois.eduLanguage: English - Date: 2013-10-07 09:50:13
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38 | Add to Reading ListSource URL: www.msha.govLanguage: English - Date: 2014-07-18 14:22:58
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39 | Add to Reading ListSource URL: www.usbr.govLanguage: English - Date: 2009-11-20 18:47:50
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40 | Add to Reading ListSource URL: sites.nationalacademies.orgLanguage: English - Date: 2014-08-13 23:08:34
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