Possibility of working a thick coal seam in descending lifts under reconsolidated caved rocks : Lojas, J In Polish. Przegl. Gorn. V30, N2, Feb. 1974, P93–P99

• Publisher: Elsevier Science
• Year: 1974
• Tongue: English
• Weight: 92 KB
• Volume: 11
• Category: Article
• ISSN: 0148-9062
• DOI: 10.1016/0148-9062(74)93212-4