000 00407nam a22001577a 4500
999 _c3193
_d3193
008 200320b ||||| |||| 00| 0 eng d
082 0 0 _a621.833
_bH8384
100 _91369
_aHoughton, P. S.
245 1 0 _aGears, spur, helical bevel and worm
_cby P. S.Houghton
250 _a1st ed.
260 _aLondon
_bTechnical Press
_c1952
300 _axvi,391 p.
365 _d32.13
650 0 _aGearing
942 _cBK