000 00414nam a2200145Ia 4500
008 180620b1993 xxu||||| |||| 00| 0 eng d
020 _a818527309x
082 _a621.385 BIS
100 _aBiswas, Nripendra N
245 _aPrinciples of Telephony
_cNripendra N Biswas
260 _aIndia
_bRadiant Books
_c1993
300 _avii, 138p.
650 _aTelephone, Automatic
906 _a527fd4c1ac10491901c4efb5afa10bd5
999 _c62504
_d62504