000 00269nam a2200109Ia 4500
008 201224s9999||||xx |||||||||||||| ||und||
100 _aGupta S
_92773
245 0 _aElectronics Communications
260 _aNew Delhi
_bKhanna Publishers
_c1981
500 _a792
942 _cBK
999 _c7837
_d7821