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دليل المستخدم
Al Lahawy، S. O.، و Peter، R. (1990). A STUDY TO IDENTIFY REASONS WHY TRAINEES DROPPED OUT OF THEIR TRAINING PROGRAM AT THE VOCATIONAL TRAINING CENTER, SAUDI ARABIA (رسالة ماجستير غير منشورة). University of Wisconsin–Stout، مينوموني. مسترجع من http://search.mandumah.com/Record/615912
Al Lahawy، Saliem O.، و Richard Peter. "A STUDY TO IDENTIFY REASONS WHY TRAINEES DROPPED OUT OF THEIR TRAINING PROGRAM AT THE VOCATIONAL TRAINING CENTER, SAUDI ARABIA" رسالة ماجستير. University of Wisconsin–Stout، مينوموني، 1990. مسترجع من http://search.mandumah.com/Record/615912