Control of harmful dust in coal mines.
Wedi'i Gadw mewn:
| Awdur Corfforaethol: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
London,
National Coal Board, Mining Department,
1973.
|
| Pynciau: |
| Disgrifiad Corfforoll: | [6], 85 p. illus., plans. 21 cm. |
|---|---|
| Llyfryddiaeth: | Includes bibliographical references. |
| ISBN: | 0901429546 |