nblib.library.kznblib.library.kz/elib/library.kz/jurnal/Obshestvennye 02-2017... · The analysis of...
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nblib.library.kznblib.library.kz/elib/library.kz/jurnal/Obshestvennye 02-2017... · The analysis of the stages of development of ... took the third place after coal (29,7%) and natural