000			00343nam a2200145Ia 4500
008			170101s1987 xx 000 0 und d
082			_a530 A76P
100			_aArora D.D.
245		0	_aPractical physics
260			_aNew Delhi _bKalyani Publishors _c1987
300			_a22cm. 256
650			_aPHYSICS
653			_aPHYSICS
942			_2ddc _cB
999			_c98800 _d98800