A. Cleef, B. van Geel, H. Hooghiemstra, W Roeleveld, T.A. Wijmstra. Palynology, a key to climatic and geographic change A tribute to Thomas van der Hammen. njg [Internet]. 1990Jan.1 [cited 2026Mar.29];:205-6. Available from: https://njgjournal.nl/index.php/njg/article/view/12863