LDR 00490naa#a2200169#i#450# 001 EN\INFRA-M\bibl\14648 005 20241123195418.6 011 ## _a2500-0527 100 ## _a20161015b2016####ek#y0engy0150####ca 101 0# _aRUS 102 ## _aRU 200 1# _aEconomic concentration as an object of scientific research _eJournal article 210 1# _aMoscow _cINFRA-M Academic Publishing LLC. _d2016 215 ## _a0 с. 608 ## _aJournal article _2local 700 #1 _aChistyakova _gAnastasiya 856 4# _azh-szf.ru _u