C. H Daniels, F Gramann, and A Köthe (1993)
The Oligocene "Septarienton" of Lower Saxony. Biostratigraphy of an equivalent of the Boom Formation of Belgium,with special considerations to its upper and lower boundaries
Bulletin de la Société belge de Géologie, vol. 102 p. 79-89.
04493, .58, A, BRAB3, OLIG, STRA, PALMIC
Document Actions