000 00267nam a2200121Ia 4500
008 220201s1947 xx 000 0 eng d
082 _a621.8
100 _aCoblacott, R A
245 0 _amechanical vibration
260 _bLondon
_c1947
300 _a130
942 _2ddc
999 _c72758
_d72758