SEYED SADRA NOJBAEE; GHAZAL AHMADI(CORRESPONDING AUTHOR); EHTERAM GHASEMABADI. EVALUATION OF THE RELATIONSHIP BETWEEN PSYCO-SOCIAL ENVIRONMENTS OF CLASS AND EDUCATION PROGRESS OF STUDENTS. Singaporean Journal of Business Economics and Management, [S. l.], v. 2, n. (12), p. 22–29, 2014. Disponível em: https://singaporeanjbem.com/index.php/SJBEM/article/view/297. Acesso em: 25 may. 2026.