| LDR | 00409camk 00145 k 4500 | |
|---|---|---|
| 001 | 000000030023 | |
| 005 | 20010913133403 | |
| 008 | 010913s1997 us 000a eng | |
| 049 | ▼l WM00004796 | |
| 056 | ▼a 559.64 | |
| 090 | ▼a 559.64 ▼b U84m | |
| 110 | ▼a U.S.Department of Labor. | |
| 245 | 10 | ▼a Mine Ventilation / ▼d U.S.Department of Labor |
| 260 | ▼a United States: ▼b U.S.Department of Labor, ▼c 1997 | |
| 300 | ▼a 43p , ▼c 18cm |