00514naa#a2200169#i#450# EN\INFRA-M\bibl\43594 20240812160043.1 2306-1731 20210421b2021####ek#y0engy0150####ca RU American School Crisis Journal article Moscow INFRA-M Academic Publishing LLC. 2021 9 с. Journal article local Статистика. Демография. Социология. 31 Kozhevnikov P. G. naukaru.ru