(2010). The effect of errors in the model tree development in historical thinking skills students of the University of Diyala. , 6(44), 89-105.
. "The effect of errors in the model tree development in historical thinking skills students of the University of Diyala". , 6, 44, 2010, 89-105.
(2010). 'The effect of errors in the model tree development in historical thinking skills students of the University of Diyala', , 6(44), pp. 89-105.
The effect of errors in the model tree development in historical thinking skills students of the University of Diyala. , 2010; 6(44): 89-105.


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