00498naa#a2200169#i#4500001002100000005001700021011001400038100004100052101000800093102000700101200009600108210005100204215001000255608002700265700002100292856001500313EN\INFRA-M\bibl\332520241006044317.7##a2305-7807##a20140815b2014####ek#y0engy0150####ca0#aENG##aRU1#aHistorical Transformation of the «Labour Efficiency» Scientific CategoryeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2014##a3 с.##aJournal article2local#1aGrechnikovagS. 4#anaukaru.ru