Biblioteca IFEA
Biblioteca IFEA
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Aspectos económicos de las pequeñas minas carboníferas subterráneas de las montañas de Appalachia (EE.UU.)

By: Contributor(s): Material type: ArticleArticleLanguage: Eng Subject(s): Other classification:
  • Am.Géol 137 bis
 In: Primer symposium nacional del carbón 34, 14 p : ill., carte, tab.
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