00325nam a2200157Ia 4500008003600000041000800036082001100044100001800055245002500073260001000098300000800108650000900116650001700125650000700142700001800149210210b   xxu||||| |||| 00| 0 eng d  aeng  a535/50  aHALLOWS (R W)  aOscilloscope at work  ab-c  a171  awork  aOscilloscope  aat  aMILWARD (H K)