00333nam a2200133Ia 45000030006000000080041000060400015000471000023000622450057000852500010001422600018001525460012001700050017001820STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aSubir kumar Sarkar  aOptical Fibers and Fibre optic communication systems  aFirst  bS.Chandc1997  aEnglish20220125170149.0