00560naa#a2200181#i#4500001002100000003001700021005001700038011001400055100004100069101000800110102000700118200010700125210005100232215001000283608002700293700001900320856003900339EN\INFRA-M\bibl\6712/en/manage/index20250215180815.6##a1998-0701##a20131017b2013####ek#y0engy0150####ca0#aRUS##aRU1#aProfitability marginal profit in the system marginal analysis of the economic subjecteJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2013##a3 с.##aJournal article2local#1aSmirnovagYu. 4#atest.editorum.ruu/en/manage/index