AbdulJsbbar Alhelfi, D. (2007). oil:markets, World Demand and Supplis of GCCS. , 24(14), 36-49.
Dr. AbdulJsbbar Alhelfi. "oil:markets, World Demand and Supplis of GCCS". , 24, 14, 2007, 36-49.
AbdulJsbbar Alhelfi, D. (2007). 'oil:markets, World Demand and Supplis of GCCS', , 24(14), pp. 36-49.
AbdulJsbbar Alhelfi, D. oil:markets, World Demand and Supplis of GCCS. , 2007; 24(14): 36-49.


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