00561naa#a2200169#i#450# EN\INFRA-M\bibl\41451 20220705095954.2 2500-0519 20201224b2020####ek#y0engy0150####ca RU The necessity in the concept of the subject and proof of the need for it - case of the subject as an addition of agent Journal article Moscow INFRA-M Academic Publishing LLC. 2020 2 с. Journal article local Философия. 10 Kudrin S. K. naukaru.ru