TY - JOUR AU - حسینی طباطبایی, فوزیه AU - قدیمی مقدم, ملک محمد TI - An Investigation on Causes of Academic Achievement in Girls Versus Boys in Khorasan's Provinces (Northren, Southren and Razavi) JO - Research in Curriculum Planning VL - 4 IS - 15 SP - 119 EP - 147 PY - 2007 DO - ER -