%0 Conference Proceedings %T Estimation of the Reasons of Qanat Degredation and Its Effects on Villagers’ Participation (Case Study of Six Regions in the Khorassan Province) %A -, - %A -, - %A Hasheminia, Seyed Majid %A Davary, Kamran %J 4th Asian Regional Conference & 10th International Seminar on Participatory Irrigation Management %D 2007