Water rights and conflict resolution processes in Afghanistan : the case of the Sar-i-Pul sub-basin / Vincent Thomas with Mujib Ahmad Azizi and Ihsanullah Ghafoori. Kabul : Afghanistan Research and Evaluation Unit, 2012 ; Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2012