The heterogeneity of the form genus Mariopteris Zeiller. A comparative morphological study with special reference to the frond composition of West-European species.
Diss. Univ. Utrecht. 172 pp. 21 fig. Orig. wrps. very good. !! Lacks separate plate section !!
Aspects of the Lateglacial-Early Holocene vegetation development in Western Europe. Palynological and palaeobotanical investigations in Brabant (The Netherlands) and Hessen (Germany).
1998. Diss. Univ. Utrecht. 240 pp. many figs. Orig. wrps. very good.
Mesozoic sporae dispersae from Zaïre : I. Haute-Lueki Series. /&/ II. The Loia and Bokungu Groups in the Samba borehole. /&/ III. Some miospores from the Stanleyville Group.
1976, Musée Royal de l'Afrique Centrale, Annales Scieces Géologique 78&80; VIII+40+60 pp. 6+8 plts. Orig. wrps. libr. stamp on front cover.