| LDR | 00474camk 00157 k 4500 | |
|---|---|---|
| 001 | 000000045893 | |
| 005 | 20081120133403 | |
| 008 | 081120s1990 us 000a eng | |
| 049 | ▼l WM00008237 | |
| 056 | ▼a 540.98 ▼2 Revised | |
| 090 | ▼a 540.98 ▼b O15e | |
| 110 | ▼a Occupational Safety and Health Administration. | |
| 245 | 10 | ▼a Excavations(OSHA 2226) / ▼d Occupational Safety and Health Administration |
| 250 | ▼a Revised. | |
| 260 | ▼a United States: ▼b OSHA, ▼c 1990 | |
| 300 | ▼a 17p , ▼c 21cm |