00322    a2200109   4500020001500000082002000015100002400035245004400059260004000103300002300143650004600166  a0071137939  a621.381537bVAC  aVaccaro, Richard J.  aDigital controlba state space approach  aNew YorkbMcGraw - Hillc1995g1995  axvii, 455p.c22cm.  aSWITCHING CONTROL TRIGGER CIRCUITS RELAYS