000 00306nam a2200121Ia 4500
001 120520
008 170722s9999 xx 000 0 und d
100 _aDavis, Sidney A.
245 _aElectromechanical components for servomechanisms /
260 _c1961.
700 _aLedgerwood, Byron K.
942 _cGEN
999 _c59738
_d59738