00293nam a2200133Ia 45000030006000000080041000060400015000471000014000622450034000762500011001102600009001215460012001300050017001420STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aGowar, J.  aOptical communication systems  aSecond  c1996  aEnglish20220125170145.0