00421nam a22001577i 4500001001000000005001700010008004100027082001900068100002500087245005100112250001000163260004300173300001700216650001200233020001800245SXC01630820260819093613.0260101s1970    ii            000 0 eng d  a530 NEL-A3222  aNelkon, M; Parker, P10aAdvanced level physics /cNelkon, M; Parker, P  a3 ed.  abArnold-Heinemann India, Delhi,c1970  ap. ;c22 cm. 0aPhysics  a9780435686109