1. Plasmic fabrics of two Sudan Vertisols;Blokhuis;Geoderma,1970
2. Fabric and Mineral Analysis of Soils;Brewer,1964
3. The Guiana Coast;Diephuis;Tijdschr. Koninkl. Ned. Aardrijkskundig Genoot.,1966
4. Investigations on the mineralogical composition of Tertiary and Quaternary sands in northern Surinam;Krook,1966
5. Pyrites as a factor controlling chemical ripening and formation of “catclay” with special reference to the coastal plain Surinam;Pons;Bull. Agr. Expt. Sta. Paramaribo,1965