00273    a2200109   4500020001500000082001300015100001600028245002700044260003900071300002100110650003200131  a0412555700  a537bDOB  aDobbs, E.R.  aBasic electromagnetism  aLondonbChapman & Hallc1993g1993  axvi, 246p.c21cm  aElectricity and electronics