سمية غزالة, لعناق; هبة, النوعي
(جامعة غرداية/كلية العلوم الإقتصادية ، التجارية وعلوم التسيير, 2019-06-19)
In this study we examined the impact of fluctuations in oil prices on the prices of public transactions for works, we took each share separately (the share of major works, heating and storages, carpentry, electricity, fat ...