00394nam a22001457i 4500001001000000005001700010008004100027082002400068100001500092245004000107250001100147260005100158300001700209650002200226SXC01099520260819093511.0260101s1977    ii            000 0 eng d  a530.028 ARO-B15222  aArora, C L10aBSc practical physics /cArora, C L  a15 ed.  abS Chand & Company Pvt Ltd., New Delhi,c1977  ap. ;c22 cm. 0aPractical physics