TY  - JOUR
AU  - Khadrizadeh, Ali Akbar
TI  - A study on the reasons of changing Caliphate center from Medina to Kufa (35-40 A.H)
JO  - Journal of History
VL  - 6
IS  - 22
SP  - 35
EP  - 48
PY  - 2011
DO  - 
ER  -