00574naa#a2200169#i#450# EN\INFRA-M\bibl\44259 20250129030636.3 2587-9111 20210622b2021####ek#y0engy0150####ca RU The Construction Sector of the Oil and Gas Region in the Face of Declining Investment Activity Journal article Moscow INFRA-M Academic Publishing LLC. 2021 6 с. Journal article local Экономика. Экономические науки. 33 Lysenko I. V. zh-szf.ru