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![](./img/clear.gif) 1.- Introduction to Symposium on Pennsylvanian problems
Wanless, Harold R.; Congreso - Symposium on Pennsylvanian Problems (1946. San Luis, Estados Unidos)
[S.l.: s.n.], 1947
Journal of Geology
Cª 337-50
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![](./img/clear.gif) 2.- Regional variations in Pennsylvanian lithology
Wanless, Harold R.; Congreso - Symposium on Pennsylvanian Problems (1946. San Luis, Estados Unidos)
[S.l.: s.n.], 1947
Journal of Geology
Cª 337-51
Ver registro
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