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Improving the room-and-pillar system in partly-frozen horizons of Noril'sk mines

✍ Scribed by V. N. Skuba; L. N. Shcherbin

Publisher: Springer
Year: 1970
Tongue: English
Weight: 243 KB
Volume: 6
Category: Article
ISSN: 1573-8736
DOI: 10.1007/bf02501470

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