×
دليل المستخدم
Alharthi، D.، و Benjamin، W. F. (1990). The effects of programmed instruction in teaching geography to low achievers in the intermediate schools of Saudi Arabia (رسالة دكتوراه غير منشورة). South Florida University، تامبا. مسترجع من http://search.mandumah.com/Record/619932
Alharthi، Dakhil، و William F. Benjamin. "The Effects of Programmed Instruction in Teaching Geography to Low Achievers in the Intermediate Schools of Saudi Arabia" رسالة دكتوراه. South Florida University، تامبا، 1990. مسترجع من http://search.mandumah.com/Record/619932