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دليل المستخدم
Al Odaibi، A. A. I.، و Duncan، J. A. (1983). ANALYSIS OF EDUCATIONAL COMPETENCY AND TRAINING NEEDS OF AGRICULTURAL EXTENSION WORKERS IN THE EASTERN DISTRICT OF SAUDI ARABIA (رسالة دكتوراه غير منشورة). University of Wisconsin–Madison، ماديسون. مسترجع من http://search.mandumah.com/Record/615124
Al Odaibi، Abd Allah Ibrahim، و James A. Duncan. "ANALYSIS OF EDUCATIONAL COMPETENCY AND TRAINING NEEDS OF AGRICULTURAL EXTENSION WORKERS IN THE EASTERN DISTRICT OF SAUDI ARABIA" رسالة دكتوراه. University of Wisconsin–Madison، ماديسون، 1983. مسترجع من http://search.mandumah.com/Record/615124