a. abidelkareem, M., sajid ibrahim, H. (2011). The effect of the representation of roles in the collection of fifth grade pupils of primary and Dafiethen to learn science. , 0(53), 451-483.
majid a. abidelkareem; hadeel sajid ibrahim. "The effect of the representation of roles in the collection of fifth grade pupils of primary and Dafiethen to learn science". , 0, 53, 2011, 451-483.
a. abidelkareem, M., sajid ibrahim, H. (2011). 'The effect of the representation of roles in the collection of fifth grade pupils of primary and Dafiethen to learn science', , 0(53), pp. 451-483.
a. abidelkareem, M., sajid ibrahim, H. The effect of the representation of roles in the collection of fifth grade pupils of primary and Dafiethen to learn science. , 2011; 0(53): 451-483.


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