For citations:

Koleva G.Yu. ABOUT THE FIRST OIL AND GAS INDUSTRY LEADERS OF THE TYUMEN REGION IN THE KHANTY-MANSIYSK AUTONOMOUS OKRUG. Severny region: nauka, obrazovanie, kultura. 2022;(4 (52)):31-37. (In Russ.) https://doi.org/10.34822/2312-377X-2022-4-31-37