00242nam a2200109Ia 4500008004100000041000800041082001900049100001600068245003100084260000900115300000800124211209s1976    xx            000 0 und d  aeng  a621.31 N76 BEL  aBELEVITCH V  aCLASSICAL NETWORKS THEORY   c1976  a434