Manylion Llyfryddiaeth
| Awduron Corfforaethol: |
Tunnel and Shaft Conference, Minneapolis,
American Society of Civil Engineers,
Society of Mining Engineers of AIME,
University of Minnesota. School of Mineral and Metallurgical Engineering,
Minnesota. University. Dept. of Civil Engineering |
|---|
| Awduron Eraill: |
Yardley, Donald H., 1917-
(ed.) |
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| Fformat: | Trafodyn Cynhadledd
Llyfr
|
|---|
| Iaith: | English |
|---|
| Cyhoeddwyd: |
New York,
Society of Mining Engineers of the American Institute of Mining, Metallurgical, and Petroleum Engineers,
1970.
|
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| Pynciau: | |
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