TY  - JOUR
AU  - azizzadeh, fariba
AU  - jahani, nader
TI  - Qualitative study of issues and problems of Tamarchin informal border crossing of Piranshahr and provide suitable solutions to improve its performance .
JO  - Social Sciences Quarterly
VL  - 13
IS  - 1
SP  - 291
EP  - 320
PY  - 2019
DO  - 
ER  -