List of Articles اصلاح گر Open Access Article Abstract Page Full-Text 1 - Role of bentonite, illite, hematite, zeolite, and calcite in decreasing of heavy metals adsorption by polluted wastewater in Tabriz city رامین Salmasi Mansooreh Mahdavi Alireza Ostadrahimi Open Access Article Abstract Page Full-Text 2 - Characteristics of leadership styles of school principals Alireza Shabani Javad Soleymanpoor Ali Khalkhali