00601nam a2200181Ia 4500008004100000082001700041100001400058245002600072250000800098260002900106300000800135500002400143650001600167942000700183952010600190952010600296999001700402230524s9999    xx            000 0 und d  a621.327bSIN  aR.K.Singh 0aOptical Communication  a1ST  aNEW DELHIbKatariac2003  a324  aQuantity Number:  2  aElectronics  cBK  00104070aTATCLbTATCLcGENd2023-05-24l0o621.327 SINp6234r2023-05-24w2023-05-24yBKzCPEC9408  00104070aTATCLbTATCLcGENd2023-05-24l0o621.327 SINp6235r2023-05-24w2023-05-24yBKzCPEC9408  c19492d19492