| 000 | 004360000a22001450004500 | ||
|---|---|---|---|
| 027 |
_aBS 4850 : Pt. 2 : 1972 _q1972 |
||
| 041 | _aeng | ||
| 080 |
_a681.327.63 _b: 621.3.037.3 |
||
| 942 | _cSD | ||
| 110 | _aBRITISH STANDARDS INSTITUTION | ||
| 245 | _aBS 4850 : Pt. 2 : 1972 : Specification for magnetic six-disk packs for data processing - part 2 : track format | ||
| 260 |
_aLondon _bB.S.I. _c1972 |
||
| 300 | _a10p. | ||
| 500 | _aSTD1840 | ||
| 999 |
_c24627 _d24627 |
||