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The forward abutment in longwall mining : Shepherd, R 10F, 16R. Colliery Guard. May, 1973, 6P

Book ID: 107895739
Publisher: Elsevier Science
Year: 1974
Tongue: English
Weight: 111 KB
Volume: 11
Category: Article
ISSN: 0148-9062
DOI: 10.1016/0148-9062(74)90954-1

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