TY - JOUR AU - tari, farzane AU - , TI - Identifying and Modelling of Challenges for Implementing E-Learning in the Iranian National Gas Company: An Interpretive Structural Modeling (ISM) approach JO - Quarterly Journal of Training and Development of Human Resources VL - 4 IS - 14 SP - 0 EP - 0 PY - 2018 DO - ER -