00265nam a2200109Ia 4500008004100000041000800041082001800049100001500067245004700082260001900129365000700148230303s9999    xx            000 0 und d  aeng  a621.38153 GOP  aGOPAL (M):  aDigital Control and State Variable Methods  aNEW DELHIbTMH  cRS