31 | Add to Reading ListSource URL: www.nps.govLanguage: English - Date: 2012-11-08 18:42:38
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32 | Add to Reading ListSource URL: www.nps.govLanguage: English - Date: 2013-11-27 13:45:12
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33 | Add to Reading ListSource URL: www.nps.govLanguage: English - Date: 2008-11-10 15:50:10
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34 | Add to Reading ListSource URL: www.nps.govLanguage: English - Date: 2007-01-17 12:26:34
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35 | Add to Reading ListSource URL: www.nps.govLanguage: English - Date: 2007-10-06 19:08:53
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36 | Add to Reading ListSource URL: www.monarchwatch.orgLanguage: English - Date: 2005-02-20 17:28:03
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37 | Add to Reading ListSource URL: ice2.uab.catLanguage: English - Date: 2013-06-03 10:04:38
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38 | Add to Reading ListSource URL: climate.envsci.rutgers.eduLanguage: English - Date: 2002-02-10 21:55:49
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39 | Add to Reading ListSource URL: icecap.usLanguage: English - Date: 2007-12-12 13:06:24
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