000 00334nam a22001457a 4500
003 OSt
020 _aNA
040 _c0
082 _222
_a530.15
100 _aArora, C. L.
245 _aB. Sc. practical physics /
260 _aNew Delhi,
_bS. Chand & Company,
_cc1986.
300 _axvi, 506p. ;
_bill. ;
_c21 cm.
942 _2ddc
_cPHY
_01
999 _c5715
_d5715