(2008). Reasons for failure sixth preparatory students in chemistry from the perspective of students and teachers. , 4(34), 218-226.
. "Reasons for failure sixth preparatory students in chemistry from the perspective of students and teachers". , 4, 34, 2008, 218-226.
(2008). 'Reasons for failure sixth preparatory students in chemistry from the perspective of students and teachers', , 4(34), pp. 218-226.
Reasons for failure sixth preparatory students in chemistry from the perspective of students and teachers. , 2008; 4(34): 218-226.


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