00498naa#a2200169#i#450# EN\INFRA-M\bibl\3325 20241224151855.2 2305-7807 20140815b2014####ek#y0engy0150####ca ENG RU Historical Transformation of the «Labour Efficiency» Scientific Category Journal article Moscow INFRA-M Academic Publishing LLC. 2014 3 с. Journal article local Grechnikova S. naukaru.ru