00273nam a2200109Ia 4500008004100000041000800041082001800049100001100067245005900078260001900137365000700156230303s9999    xx            000 0 und d  aeng  a621.38275 SEN  aSenior  aOptical Fiber Communications : Principles And Practice  aNEW DELHIbPHI  cRS