Innovation of building materials from Indigenous sources of Bangladesh and studies of their Physio-Chemical properties / Akhtar Uddin Ahmed. [PhD Thesis] Ahmed, Akhtar Uddin. Materials. 691.9 AHI Thesis (PhD)--Department of Chemistry, University of Dhaka, 1992. Dhaka : University of Dhaka , 1992. 1992. 1992 Text v.p. : eng