| 000 | nam a22 4500 | ||
|---|---|---|---|
| 245 | _aSpecifiestion for sper and helical gears : path 2 basic rock from module and accuracy (1 to 50 metric module) | ||
| 260 |
_aLondon _bBritish Standards Institution _c1970 |
||
| 710 | _aBritish Standards Institution | ||
| 942 | _c22 | ||
| 999 |
_c4810 _d4810 |
||