000 00246pam a2200097a 44500
008 140414b2001 xxu||||| |||| 00| 0 eng d
100 _aN N BISWAS
245 _aPRINCIPLES OF TELEPHONY
_c
260 _aBangalore
_bRadiant Books
_c2001
906 _a49648
999 _c45176
_d45176