| LDR | 00405namk 00121 k 4500 | |
|---|---|---|
| 001 | 000000021338 | |
| 005 | 19950421133403 | |
| 008 | 950421s1989 sz 000a eng | |
| 049 | ▼l WM00003381 ▼v v.1 | |
| 090 | ▼a 567.38 ▼b I61c ▼c v.1 | |
| 245 | 10 | ▼a Directives: ▼b Design, construction and operational principles of telecommunication, power and electrified railway facilities / ▼d ITU |
| 260 | ▼a 스위스: ▼b ITU, ▼c 1989 | |
| 710 | ▼a ITU |