00342nam a2200121Ia 4500008004100000020001800041041000800059082001900067100001300086245004800099260006500147300000800212211209s1997    xx            000 0 und d  a0-07-462134-3  aeng  a629.89 N97 GOP  aGOPAL, M  aDIGITAL CONTROL AND STATE VARIABLE METHODS   aNEW DELHIbTATA MCGRAW-HILL PUBLISHING COMPANY LIMITEDc1997  a660