00554naa#a2200181#i#450# EN\INFRA-M\bibl\13604 /en/manage/index 20250811101914.1 2500-3291 20160925b2016####ek#y0engy0150####ca RUS RU Theory and Methodology of Formation of Mining and Chemical Holdings Development Journal article Moscow INFRA-M Academic Publishing LLC. 2016 0 с. Journal article local Putkova A. V. fht.editorum.ru /en/manage/index