00318cam a22001097a 4500008004000000082001800040100001900058245004600077260003800123300001000161650003700171180718b1958   xxu||||| |||| 00| 0 eng d  aYA213841 Sp71  aSpratt, H.G.M.  aMagnetic tape recordingcby H.G.M. Spratt  aLondonbHeywood and Companyc1958  a319p.  aMagnetic recorders and recording