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Working Groups
SPS Working Group: Neotethys, Paleotethys, and South China Correlations [ 2012-10-28 ]
Correlation between continental and marine Permian System [ 2012-10-27 ]
Kungurian Working Group [ 2012-10-27 ]
Sakmarian-base and Artinskian-base GSSP Working Group [ 2005-10-18 ]
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