Gräfe, K. -U. (2005). Late Cretaceous benthic foraminifers from the Basque-Cantabrian Basin, Northern Spain. Journal of Iberian Geology. 31 (2): 277-298.
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Gräfe, K. -U.
2005
Late Cretaceous benthic foraminifers from the Basque-Cantabrian Basin, Northern Spain