In the archives of a respectable Econ and PoliSci department and Outlook Archives on the Hill from at most a decade ago. I left that space to return to Tech PM and Entrepreneurship because I also studied CS, nerded out about technology strategy, and didn't have a trust fund to afford DC on a staffer's salary.

If interested, the Stanford Center on China's Economy and Institutions, the China Guiding Cases Project at Stanford Law, the Becker Friedman Institute for Research in Economics at UChicago, and Abdul Latif Jameel Poverty Action Lab at MIT have all been working on the Rural-Urban Divide problem in Developing Countries. Chinese Policymakers tend to work with Stanford and Indian Policymakers tend to work with UChicago and MIT.

Papers and books published by members of these centers would teach you all that you need to know about Developmental Economics (or at least enough for a pre-doc).