Titel
zu den Filteroptionen- Washington, DC : World Bank, Development Research Group, Sustainable Rural and Urban Development Team, Dec. 2007 ; Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, Dec. 2007
- Washington, DC : World Bank, Development Research Group, Sustainable Rural and Urban Development Team, Nov. 2008 ; Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, Nov. 2008