Salpingostoma prinsii nov. sp. and Gnetopsis robusta nov. sp., two new seeds from the Westphalian A/B of southern Limburg ; Late Quaternary calcareous ... Ocean (Mededelingen Rijks Geologische Dienst)
details (USA).
ISBN: 978-90-72869-06-7
ISBN-10: 90-72869-06-0
Geological Survey of the Netherlands ยท 1990