00333nam a2200133Ia 4500008004100000020001800041100001900059245005900078250001100137260001200148260000900160300000800169650002200177221231s9999    xx            000 0 und d  a81-315-0559-6  aSenior, John M 0aOptical Fiber Communications : Principles and Practice  a2nd Ed  bPearson  c2009  a921  aTelecommunication