000 00422nam a2200181Ia 4500
005 20240921120703.0
008 240921s9999||||xx |||||||||||||| ||und||
041 _aENGLISH
082 _A621.385 L0
100 _aBiswas N N
245 0 _aPrinciples of Telephony
250 _a1st
260 _bRadiant Books,Ban
500 _aManual Telephony
650 _aTelephone
_bElectronics
942 _cBK
999 _c247321
_d247321