000 00331nam a2200121Ia 4500
008 220706s9999 xx 000 0 und d
100 _a2017 Reg
245 0 _aDigital communication
260 _bAnna University
_c2020 Nov-Dec
650 _aEC8501
856 _uhttp://library.psgitech.ac.in/Question_Bank/QB1059.pdf
942 _cQB
999 _c26651
_d26651