Hamid Hassan ALsoofy, U. (2005). Conservation of concept among children: Semantic Study. , 16(1), 119-138.
Usama Hamid Hassan ALsoofy. "Conservation of concept among children: Semantic Study". , 16, 1, 2005, 119-138.
Hamid Hassan ALsoofy, U. (2005). 'Conservation of concept among children: Semantic Study', , 16(1), pp. 119-138.
Hamid Hassan ALsoofy, U. Conservation of concept among children: Semantic Study. , 2005; 16(1): 119-138.


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