Voorthuysen, J. H. van. (1950). The quantitative distribution of the Plio-Pleistocene Foraminifera of a boring at the Hague (Netherlands). Followed by: The quantitative distribution of the Pleistocene, Pliocene and Miocene foraminifera of boring Zaandam (Netherlands). Med. geol. Sticht., nieuwe Ser. 4, 31-49; 51-72.
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Voorthuysen, J. H. van
1950
The quantitative distribution of the Plio-Pleistocene Foraminifera of a boring at the Hague (Netherlands). Followed by: The quantitative distribution of the Pleistocene, Pliocene and Miocene foraminifera of boring Zaandam (Netherlands).