00254nam a2200109Ia 4500008004100000041000800041082001800049100001800067245003300085260001900118365000700137230303s9999    xx            000 0 und d  aeng  a621.38275 KEI  aKEISER (GERAL  aOptical Fiber communications  aNEW DELHIbTMH  cRS