1. A Statistical study of wastage at school; a study prenpared for the International Bureau of Education
پدیدآورنده : by Unesco office of statistics
کتابخانه: Library of Institute of Psychology and Educational Sciences of Tehran University (Tehran)
موضوع : Dropouts
2. A statistical study of wastage at school
پدیدآورنده : / by the Unesco Office of Statistics.
کتابخانه: National Library and Archives of Islamic Republic of Iran (Tehran)
موضوع : ترک تحصیل
رده :
LC
۱۴۲
/
ی
۹
الف
۵ ۱۳۵۱
