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Toelichtingen bij de Geologische kaart van Nederland 1: 50000. Blad 37 W Rotterdam West.. (Notice explicative de la carte gédogique des Pays-Bas. Feuille 37 W Rotterdam Ouest)
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A description of the area west of Rotterdam. The whole area is covered by holocene deposits of about 20 m. thickness. The Pleistocene geology has been described by S. Jelgersma, the deeper subsurface geology by H. A. van Adrichem Boogaert