تعداد ۱ پاسخ غیر تکراری از ۱ پاسخ تکراری در مدت زمان ۳,۰۳ ثانیه یافت شد.

1. Supervision in secondary schools

پدیدآورنده : by Harl R. Douglass and Charles W. Boardman

کتابخانه: Library of Faculty Literature of University of Tehran (Tehran)

موضوع : School superintendents and principals,High schools,School management and organization,Education, Secondary,Teaching

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