Theory and practice of mine ventilation,
Wedi'i Gadw mewn:
| OCLC: | 3184827 |
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| Prif Awdur: | |
| Iaith: | English |
| Cyhoeddwyd: |
Columbus, O.,
The Jeffrey manufacturing co.,
c1936.
|
| Rhifyn: | 1st ed. |
| Pynciau: | |
| Fformat: | Monograph Note that CRL will digitize material from the collection when copyright allows. |
| Disgrifiad Corfforoll: | 4 p. ̋., 11-285 p. illus., diagrs. 20 cm. |
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