000 00276nam a2200133Ia 4500
654 _aMECH
100 _aPorter.A.
250 _a2nd Ed.
245 _aIntroduction To Servomechanisms.
260 _bJWS
_c1952
082 _bPOR
_a621.8
300 _a176p.
999 _c4791
_d4791
300 _c23 cm.
655 _aM-11
041 _aeng
546 _aText in English