000 00332nam a2200133Ia 4500
008 220201s2021 xx 000 0 eng d
082 _a658.3
_bReference AY
100 _aReference aydu, C S
245 0 _aCommunication
250 _a9th ed
260 _bHimalaya Publishing House
_aBombay
_c2021
300 _a712p.
942 _2ddc
_05
999 _c2339
_d2339