| 000 | 00287nam a2200085Ia 4500 | ||
|---|---|---|---|
| 008 | 180131b1956 xxu||||| |||| 00| 0 eng d | ||
| 080 |
_a _bBS-1538 - 1956 |
||
| 100 | _aBritish Standards Institution | ||
| 245 | _aBs-1538 - 1956; Intrinsically-Safe Transformers Primarily For Bell-Signalling Circuits | ||
| 260 |
_a _bBSI _c1956 |
||
| 999 |
_c40869 _d40869 |
||