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082 _a629.8323 DAV'E
100 _aLEDGERWOOD, B. K,DAVIS, S. A
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245 _aELECTROMECHANICAL COMPONENTS FOR SERVOMECHANISM
260 _aNEWYORK
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300 _a338P
942 _cBK
999 _c582474
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