00395nam a2200145Ia 4500008004100000020001500041041001200056082001100068100001600079245006700095260004900162300000800211650001600219700001400235221030s9999    xx            000 0 und d  a8122422411  aEnglish  a105.23  aA. K. Singh 0aDigital Principles Switching Theorycby A. K. Singh, M. Tiwari  bNew  Age International Pub.aNew Delhic2009  a527  aBE Computer  aM. Tiwari