000 00267nam a22001217a 4500
999 _c6225
_d6225
003 OSt
005 20210319120724.0
008 210319b ||||| |||| 00| 0 eng d
100 _aARMUGHAM, M.
245 _aOPTICAL COMMUNICATION
260 _bANURADHA
942 _2ddc
_cGE