Okwii, Tedy. Investigation into the engineering properties of marble dust and riv er sand stabilized black cotton soil for subgrade construction / Ted y Okwii. - Kampala, 2015. - xii, 115 p. ; 30 cm. Unpublished thesis (MSc. CIVIL ENG.)- Makerere University, 2015 Subjects--Topical Terms: Roads-- Subgrades. Road materials. Dewey Class. No.: 625.735