Preliminaries of coal mining; prospecting-explosives-development-drainage-ventilation,
Wedi'i Gadw mewn:
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
New York,
McGraw-Hill,
1926.
|
| Rhifyn: | 1st ed. |
| Cyfres: | Practical coal production.
|
| Pynciau: |
CARM 1 Store
| Rhif Galw: |
A2:AK27B0 B05465 |
|---|---|
| Copi 1 | Ar gael Gwneud Cais |