Lithostratigraphic units of the lower part of the Carboniferous in northern León, Spain (with a “Note on some goniatite faunas” by C. H. WAGNER-GENTIS)

Wagner, R. H., Winkler Prins, C. F., & Riding, R. E. (1971). Lithostratigraphic units of the lower part of the Carboniferous in northern León, Spain (with a “Note on some goniatite faunas” by C. H. WAGNER-GENTIS). Trabajos De Geología, 4(4), 603–665. https://doi.org/10.17811/tdg.4.1971.603-665