00322nam a2200121Ia 4500008004100000041001200041100001300053245006300066260003200129300000800161650001500169700001600184221030s9999    xx            000 0 und d  aEnglish  aN. Gupta 0aSpectrum Electricity & Magnetismcby N. Gupta, B. L. Gupta  bSharma PubaJalandharc1986  a238  aBB Physics  aB. L. Gupta