00535naa#a2200157#i#450# EN\\bibl\119699 20260407011646.2 2221-3260 20260228b2026####ek#y0engy0150####ca RU Theoretical and ideological problems of public-private partnership during the New Economic Policy (1921-1929) Journal article Yaroslavl Yaroslavl State Technical University 2026 13 с. Journal article local Kurkova Anita Sergeevna theoreticaleconomy.ru