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| ISSN 0536-1028 (Print) ISSN 2686-9853 (Online) |
Bekzod Z. Soliev
Vice Dean of Mining Faculty, Navoiy State Mining Institute. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
This email address is being protected from spambots. You need JavaScript enabled to view it.
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