| 000 | 00495nam a2200193Ia 4500 | ||
|---|---|---|---|
| 008 | 140128s9999 xx 000 0 und d | ||
| 040 | _besp Biblioteca CIESS | ||
| 041 | _aing | ||
| 082 | _a331.82373 .E582m | ||
| 100 | _aE.U.A. Department of Labour | ||
| 245 | _aMining other than coal. | ||
| 260 | _aWashington | ||
| 260 | _bBureau of Labor Standards | ||
| 260 | _c1951 | ||
| 300 | _a69 p., 23 cm. | ||
| 500 | _a007042 | ||
| 650 | _aMinas - Accidentes | ||
| 650 | _aNiños - Empleo. | ||
| 999 |
_c4528 _d4528 |
||