analog and digital Nagrath, I. J. creator text Delhi PHI Learning 2013 2nd ed monographic xv,789p. 24cm(pbk) by I. J. Nagrath Includes bibliographical references and index 621.381 9788120348028 ENG-108662 DBAD/PUB Bookwell dpl UBH/Ven dpl 20170512155450.0