00579naa#a2200169#i#450# EN\INFRA-M\bibl\42150 20240909024653.1 2587-9111 20210301b2021####ek#y0engy0150####ca RU Origin and Stages of Formation of Medium and Small Businesses in the Northern Region Journal article Moscow INFRA-M Academic Publishing LLC. 2021 4 с. Journal article local Экономика. Экономические науки. 33 Mahmudova Muhabbat Madievna naukaru.ru