1981-1986 102 p., 52 figs, 10 col. pls, in ringbinder. Published in: Vita Marina. Includes a few smaller papers/notes on Strombidae published in Vita Marina. In Dutch.Added is: Goud & Kronenberg, 1988. Xenophoridae. Een overzicht van alle recente voorkomende soorten (38 p., 44 figs). Vita Marina.
1984 102 p., 52 figs, 9 col. pls, paperbound. In Dutch.Gives an overview of all species.