Middle-Late Permian mass extinction on land
Retallack, Gregory J ; Metzger, Christine A ; Greaver, Tara ; Jahren, A. Hope ; Smith, Roger M. H ; Sheldon, Nathan D
Geological Society of America bulletin, 2006-11, Vol.118 (11-12), p.1398-1411 [Periódico revisado por pares]Boulder: Geological Society of America (GSA)
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