00381nam a2200169Ia 4500008004100000020001800041082001000059082000800069100001200077100000800089245003300097260001400130260002900144260000900173650001200182999001700194240117s9999||||xx |||||||||||||| ||und||  a81-219-2317-4  aD.C/F  b621  aagarwal  ad.c 0afiber optical communications  anew delhi  bs. chand and company ltd  c2004  aPHYSICS  c16348d16348