national economics university - institute of social studies vietnam-netherlands master's program in development economics public investments in transport and economic growth: the case of viet nam in the period 1996-2006 a thesis presented by nguyen thi que huong supervisor: dr. le quoc hoi - journal of economics and development - national economics university, vietnam october, 2011 acknowledgement first of all, i am grateful to my main supervisor, dr. le quoc hoi who instilled on me the importance of conducting meaningful research and thinking critically and thoroughly about the topic, economic theory and methods. he has been extremely helpful at all stages of my research, helping me to develop the research, enlightening me on many aspects of doing good research, and providing invaluable comments and feedback. without his guidance and support this thesis would not have been completed. also, i would like to thank the assistance and guide by dr. do ngoc huynh who enthusiastically supp