van Soest, R. W. M. (1975). Observations on taxonomy and distribution of some salps (Tunicata, Thaliacea), with descriptions of three new species.Beaufortia, 23(302), 105-130.
van Soest, R. W. M. (1974). Juvenile colonies of the genus Pyrostremma Garstang, 1929 (Tunicata, Thaliacea).Bulletin Zoölogisch Museum, Universiteit van Amsterdam, 4(4), 23-34.
van Soest, R. W. M., van Bree, P. J. H., & Stroman, L. (1974). Tooth wear as an indication of age in badgers (Meles meles L.) and red foxes (Vulpes vulpes L.). Zeitschrift für Saugetierkunde, 39(4), 243-248.
van Soest, R. W. M. (1974). A revision of the genera Salpa Forskål, 1775, Pegea Savigny, 1816 and Ritteriella Metcalf, 1919 (Tunicata, Thaliacea).Beaufortia, 22(293), 153-191.
van Soest, R. W. M. (1974). Taxonomy of the subfamily Cyclosalpinae Yount, 1954 (Tunicata, Thaliacea) with descriptions of two new species.Beaufortia, 22(288), 17-55.
van der Spoel, S., Hallegraeff, G. M., & van Soest, R. W. M. (1973). Notes on variation of diatoms and silicoflagellates in the South Atlantic Ocean.Netherlands Journal of Sea Research, 6(4), 518-541.
van Waard-Pouw, G., & van Soest, R. W. M. (1973). A bibliography of pelagic tunicates. (Verslagen en technische gegevens / Instituut voor Taxonomische Zo¨ologie (Zo¨ologisch Museum); No. 2). Inst. Tax. Zool. Univ. Amsterdam.
van Soest, R. W. M. (1973). Planktonic coelenterates collected in the North Atlantic Ocean. Bijdragen tot de Dierkunde, 43(1), 119-125.
van Soest, R. W. M. (1973). The genus Thalia Blumenbach, 1798 (Tunicata, Thaliacea), with descriptions of two new species. Beaufortia, 20(271), 193-212.
van Soest, R. W. M. (1973). A new species in the genus Salpa Forskål, 1775 (Tunicata, Thaliacea).Beaufortia, 21(273), 9-16.
