000 00276nam a22001217a 4500
999 _c6172
_d6172
003 OSt
005 20210319110316.0
008 210319b ||||| |||| 00| 0 eng d
100 _aARMUGHAM, M.
245 _aOPTICAL COMMUNICATION
260 _aCHENNAI
_bANURADHA
942 _2ddc
_cGE