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Problems of stability of the wall rock in the working of deep coal seams

✍ Scribed by A. F. Bulat; V. N. Chekhov

Publisher: Springer US
Year: 1992
Tongue: English
Weight: 528 KB
Volume: 28
Category: Article
ISSN: 1573-8582
DOI: 10.1007/bf00847320

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