| 000 | 00486 a2200253 4500 | ||
|---|---|---|---|
| 001 | 170160 | ||
| 020 | _a | ||
| 041 | _aeng | ||
| 080 | _aDBSI-456621.315.6 | ||
| 245 | _aDimensions of track circuit insulation : | ||
| 250 | _a | ||
| 260 | _aLondon | ||
| 260 | _bBSI | ||
| 260 | _c1961 | ||
| 300 | _a42 | ||
| 300 | _c | ||
| 856 | _uBSI | ||
| 490 | _aMLE : GC 171.10 : 1975 | ||
| 100 | _aBritish Standards Institution | ||
| 700 | _a | ||
| 650 | _a | ||
| 650 | _a | ||
| 942 | _cPP | ||
| 942 | _2UDC | ||
| 999 |
_c193375 _d193375 |
||