Proceedings 1981 Rapid Excavation and Tunneling Conference, San Francisco, California, May 3-7, 1981
| निगमित लेखकों: | , , |
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| अन्य लेखक: | , |
| स्वरूप: | पुस्तक |
| भाषा: | English |
| प्रकाशित: |
New York, N.Y.
Society of Mining Engineers of AIME
1981.
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| विषय: |