The Continental Shelf
Documents and Correspondence on New Guinea’s Boundaries
The Deep-Sea Canyons in the Gulf of Guinea Near Fernando Póo
The Age of Pithecanthropus
Government in Wanggulam
Ecology and Environmental Planning
Catalogue of Books and Periodical Sets on Voyages and Travels
Marine Geology and Oceanography of the Arctic Seas
Biogeography and Ecology in Australia
The Nimboran Language: Phonology and Morphology (Verhandelingen van het Koninklijk Instituut voor Taal-, Land- en Volkenkunde)