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Arbizu, Miquel A. Biostratigraphical Study of the Moniello Formation (Cantabrian Mountains, Asturias, NW Spain) : A Contribution to the Lower/Middle Devonian Boundary Problem. Miguel Arbizu et al. In Geologica et Palaeontologica, 1979, 13. Marburg, 1979, Geologica et Palaeontologica, 1979, 13.S.103-124, : .
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