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دليل المستخدم
Badr، L. H.، و Ludwig، o. J. (1978). An Instrument To Determine The Health Needs of Elementary School Children In Egypt As Perceived By Administrators, Health And Science Teachers And Health Visitors (رسالة دكتوراه غير منشورة). Indiana University، إنديانا. مسترجع من http://search.mandumah.com/Record/829017
Badr، Laila Hassan، و onald J. Ludwig. "An Instrument To Determine The Health Needs of Elementary School Children In Egypt As Perceived By Administrators, Health And Science Teachers And Health Visitors" رسالة دكتوراه. Indiana University، إنديانا، 1978. مسترجع من http://search.mandumah.com/Record/829017