| 000 | 00335nam a2200109Ia 4500 | ||
|---|---|---|---|
| 008 | 140122s9999 xx 000 0 und d | ||
| 082 | _a WHO | ||
| 100 | _aWHO | ||
| 245 | _aRecommended health based limits in occupational exposure to selected mineral dusts (silica, coal) WHO tech. Report series734 | ||
| 260 |
_b _c1986 |
||
| 942 |
_cBK _2ddc |
||
| 999 |
_c5174 _d5174 |
||