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MA complete thesis.docx

Abstract

Advisor signature ____________________ ___________________________ Examiner Signature ____________________ ___________________________ Examiner Signature ACKNOWLEDGEMENT First of all, I am greatly indebted to my almighty God for helping me complete this research work and for all his help throughout my life. I am grateful to my advisor, Mebratu Mulatu (Dr.), who critically read through the draft copies and gave me valuable suggestions and constructive comments. Without his sincere and dedicated guidance, this thesis would not have taken its present form. My heartfelt thanks and indebtedness go to my Co-advisor, Kebede Micaheal (Dr.), for his continued support during this study. He is more than what I say. Had He not helped me from the very start of my research, I could not have reached this level.