Geological investigations in West Wetar, Lirang and Solor (eastern Lesser Soenda islands) / door Jan Diederik de JongDuin- en zeezand : bijdrage tot de kennis van de granulometrische samenstelling van Nederlandse grondsoorten / J.D. de JongThe morphological evolution of the Dutch coast / J.D. de JongGeological investigations in West Wetar, Lirang and Solor (eastern Lesser Soenda islands) / door Jan Diederik de JongGeological investigations in West Wetar, Lirang and Solor (eastern Lesser Soenda islands) / door Jan Diederik de JongHet strand in de sedimentaire geologie / J.D. de JongSleutelen aan het recente milieu / door Jan Diederik de Jong