| 000 | 00410cam a22001097a 4500 | ||
|---|---|---|---|
| 008 | 180718b1952 xxu||||| |||| 00| 0 eng d | ||
| 082 | _aT85x42 | ||
| 245 |
_aRecent developments and techniques in the maintenance of standards _cby National Physical Laboratory, United Kingdom |
||
| 260 |
_aLondon _bHer Majesty's Stationery Office _c1952 |
||
| 300 | _a100+p. | ||
| 700 | _aUnited Kingdom. National Physical Laboratory | ||
| 999 |
_c498263 _d498263 |
||