00610nam a2200181Ia 4500003000400000005001700004008004100021020001800062040002800080041000800108082001600116100004600132245005100178260005300229300003800282650006500320650004300385AIT20260429165258.0221231s9999    xx            000 0 und d  a9780070010697  aATRIAbengcAITemarc21  aeng  a621.387 ALI  aAli, Syed RaffateAuthorqSyed Riffat Ali 0aDigital Switching Systemscby Syed Riffat Ali.  bTata McGraw-Hill Co. Ltd.,aNew Delhi :c©2008.  a217 p. :c19.69 x 2.54 x 24.13 cm  aElectronics and Communication2Sears list of subject heading  aDigital2Sears list of subject heading