00351cam a2200133ua 4500003000400000008004100004041000800045082002100053100001800074245005100092250000900143260005300152300001200205OSt241223b        |||||||| |||| 00| 0 eng d  aeng  a621.3133bDOV/TH  aDover, A.T  .  aTheory and practice of alternating currents /   a3 /   aLondon : bSir Isaac Pitman & Sons Ltd , c1961.  a591 ; .