00273    a2200109   4500020001500000082001600015100002000031245003600051260003100087300001700118650002800135  a8178083868  a530.14bCHE  aCheng, David K.  aFiled and wave electromagnetics  aDelhibPearsonc1989g1989  a719p.c24cm.  aFIELD AND WAVE THEORIES