00642naa#a2200193#i#450# EN\INFRA-M\bibl\39672 /en/manage/index 20250327105427.4 2500-3291 20201001b2020####ek#y0engy0150####ca RU Analysis of labor productivity in the North-Western Federal District Journal article Moscow INFRA-M Academic Publishing LLC. 2020 6 с. Journal article local Экономика. Экономические науки. 33 Ivanovskaya V. Yu. Ivanovskaya A. L. test.editorum.ru /en/manage/index