| 000 | 00439cam a22001097a 4500 | ||
|---|---|---|---|
| 008 | 180718b1950 xxu||||| |||| 00| 0 eng d | ||
| 082 | _aR647 In8 | ||
| 245 |
_aModel code of safety regulations for underground work in coal mines for the guidance of governments and of the coal mining industry _cby International Labour Office |
||
| 260 |
_aGeneva _bInternational Labour Office _c1950 |
||
| 300 | _a102+p. | ||
| 700 | _aInternational Labour Office | ||
| 999 |
_c496233 _d496233 |
||