000 00259nam a2200109Ia 4500
008 220201s2015 xx 000 0 eng d
100 _aArora, C L
245 0 _aB.Sc. pratical physics
260 _aNew Delhi
_bS Chand
_c2015
650 _aPHYSICS
942 _2ddc
999 _c70351
_d70351