Akhmetova Alikbaeva Zhaksygulova, Z. A. K. B. B. O. “Overview of Promising Manufacturers in the Oil and Gas Sector of the Republic of Kazakhstan”. Journal of Economic Research & Business Administration 116, no. 4/2 (November 30, 2016). Accessed November 23, 2024. https://be.kaznu.kz/index.php/math/article/view/1348.