00445nam a2200133Ia 4500008004100000041000800041082001800049100003200067245005900099260001900158365000700177999001900184952010800203230303s9999    xx            000 0 und d  aeng  a621.38275 SEL  aSELLARAJAN (A) KAR (SUBRAT)  aOptical Fiber Communications : Principles and Practice  aNEW DELHIbTMH  cRS  c178289d178289  00104070aECDbECDd2023-03-03g195.00l0o621.38275 SELpEB4691r2023-03-03 00:00:00w2023-03-03yBK