(2009). An Econometrical Analysis of cost function For wells construction in Tikrit, Baiji and Sammera regionSalah-aldeen gorernerate. , 9(2), 562-564.
. "An Econometrical Analysis of cost function For wells construction in Tikrit, Baiji and Sammera regionSalah-aldeen gorernerate". , 9, 2, 2009, 562-564.
(2009). 'An Econometrical Analysis of cost function For wells construction in Tikrit, Baiji and Sammera regionSalah-aldeen gorernerate', , 9(2), pp. 562-564.
An Econometrical Analysis of cost function For wells construction in Tikrit, Baiji and Sammera regionSalah-aldeen gorernerate. , 2009; 9(2): 562-564.


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