00275pam a2200109 a 4500020000500000041000800005082001900013100001500032245005500047260003900102300002400141  c  aeng  a621.31924bNIK  aNikalin N.  aFundamentals of Electrical MaterialshDonate Books  aMoscow:bMIR Publications.,c1988.  a184:bp.b.;c20*12.