TY  - JOUR
AU  - Ahmadi, Manijeh
TI  - Identifying Challenges to Development of Distance Education from the Perspective of Payame Noor University Professors
JO  -  Quarterly Journal of Training and Development of Human Resources
VL  - 7
IS  - 24
SP  - 0
EP  - 0
PY  - 2020
DO  - 
ER  -