1 | Add to Reading ListSource URL: www.stratigraphy.orgLanguage: English - Date: 2015-04-10 13:09:06
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2 | Add to Reading ListSource URL: geoscience.wisc.eduLanguage: English - Date: 2012-03-05 11:22:30
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3 | Add to Reading ListSource URL: www.stratigraphy.orgLanguage: English - Date: 2013-02-14 09:31:50
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4 | Add to Reading ListSource URL: www.northernminer.comLanguage: English - Date: 2009-10-02 17:38:52
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5 | Add to Reading ListSource URL: www.stratigraphy.orgLanguage: English - Date: 2014-02-03 00:28:15
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6 | Add to Reading ListSource URL: www.researchgate.netLanguage: English |
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