Janssen, A. W. (1991). Biostratigraphic application of 'Pteropoda' (Gastropoda, Euthecosomata) in Cainozoic deposits of the North Sea Basin and interregional correlations. Proceedings of the Tenth International Malacological Congress (Tubingen 1989). 489-492.
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Janssen, A. W.
1991
Biostratigraphic application of 'Pteropoda' (Gastropoda, Euthecosomata) in Cainozoic deposits of the North Sea Basin and interregional correlations
Proceedings of the Tenth International Malacological Congress (Tubingen 1989)