00338nam a2200121 a 450000500170000002000150001708200170003210000180004924500780006725000110014526000400015630000200019620251203090949.0  a0876920822  a537,bD, ryd  aRyder, John D  aElectricity fundamentals and applications: integrated and discret systems  a5th ed  aDelhibPrentice-Hall of Indiac1987  axiii,538p, 22cm