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Tik shaxta stvolini o‘tish va mustahkamlashda marksheyderlik ishlari
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This book covers the surveying and strengthening of vertical mine shafts
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Premium Content
Tik shaxta stvolini o‘tish va mustahkamlashda marksheyderlik ishlari
4,000so'm
Betlar soni
11 taFayl hajmi
219.08 KBFayl turi
.pptx
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