000 00304nam a2200121Ia 4500
008 220201s1970 xx 000 0 eng d
082 _a621.944
100 _aHoughton, PS
245 0 _aGears spur helical bevel internal epirdric wom
260 _bTechnical press
_c1970
300 _a26-17
942 _2ddc
999 _c76623
_d76623