1. تحلیل‌ قراردادها‌ی بیع‌ متقا‌بل‌ در صنعت‌ نفت‌ و گا‌ز ایران‌ )از دیدگا‌ه‌ موافقا‌ن‌ و مخا‌لفا‌ن‌(

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