TY - JOUR AU - namjoomanesh, mehdi AU - Sharifi, Hasanpasha AU - Shahriyari Ahmadi, mansoreh TI - Study of the evolution of the concept of academic enjoyment in students of the second period of primary education JO - PSYCHOMETRY VL - 11 IS - 43 SP - 0 EP - 0 PY - 2023 DO - ER -