Infection Prevention and Control, By Dechasa Adare Mengistu (Ass.Professor) Environmental Health policy, by Dechasa Adare (Ass.Professor)) Introduction to Environmental Health, by Dechasa Adare Mengistu, Haramaya University. 2022/23pdf Food Safety Management, by Dechasa Adare Mengistu, Haramaya University.pdf IPC, Infection prevention and Control; By Dechasa Adare Mengistu; ppt Human Ecology; By: Dechasa Adare Mengistu; Haramaya University, pptx Climate Change, By, Dechasa Adare Mengistu, Haramaya University, ppt, 2023 
