000 00316nam a22001217a 4500
082 _a621.7665
_bBRI
100 _aBritish standards institution
245 _aBritish standard bevel gears (machine cut)
260 _aLondon
_bBritish standard institution
_c1949
300 _a36 p.
_billus.
650 _aMCE
942 _cBK
999 _c9045
_d9045