Kaiyrmanova G.K., Darmenkulova Zh.B., Ernazarova A.K. Diversity of micro organisms petroleum reservoir waters: Al-Farabi Kazakh National University, Kazakhstan, Almaty. (2018). ҚазҰУ хабаршысы. Экология сериясы, 46(1), 42-49. https://bulletin-ecology.kaznu.kz/index.php/1-eco/article/view/842