00523naa#a2200181#i#450# EN\INFRA-M\bibl\2958 20240728145453.7 2305-7807 20140617b2014####ek#y0engy0150####ca RUS RU The impact of demographic processes on the productivity of social labor Journal article Moscow INFRA-M Academic Publishing LLC. 2014 5 с. Journal article local Ilicheva Yu. Kolotova S. naukaru.ru