Koval YM, Федак ІО. Allocation of polymictic sandstones in a complex geological section of oil and gas wells of the Dnipro-Donetsk depression. ogpe [Internet]. 2022 Jun. 30 [cited 2024 Nov. 21];(1(37):7-14. Available from: https://nge.nung.edu.ua/index.php/nge/article/view/587