Concise introduction to cement chemistry and manufacturing, 2018, via WWW, July 11, 2018: PDF title page (Tadele Assefa Aragaw, Bahir Dar University, Ethiopia) p. 65 (lecturer in Chemistry and Environmental Engineering, a Researcher, and a Facility Manager in the Chemical and Food Engineering at the Bahir Dar Institute of Technology; 2012, received his B.S. in Chemistry from the University of Gondar; received his M.Sc. in Environmental Engineering in 2016 from the Bahir Dar Institute of Technology, Bahir Dar University)