Development of a procedure for mechanized coal extraction beneath shield canopies in thick steep seams

✍ Scribed by L. P. Tomashevskii; L. A. Shcherbakov

• Publisher: Springer
• Year: 1971
• Tongue: English
• Weight: 488 KB
• Volume: 7
• Category: Article
• ISSN: 1573-8736
• DOI: 10.1007/bf02502817