00343cam a2200133ua 4500003000400000008004100004041000800045082002000053100002100073245004900094250000900143260004600152300001100198OSt241224b        |||||||| |||| 00| 0 eng d  aeng  a621.319bIBB/NU  aIbbetson, W S  .  aNumerical excercices in electrical wiring /   a1 /   aLondon : bE & F N Spon limited , c1948.  a91 ; .