00273nam a2200097Ia 4500008004100000040001100041245003000052260007000082300001300152300001000165251112s9999||||xx |||||||||||||| ||und||  aCNCLSA 0aIndian Journal of Physics  c1958bIndian Association for the Caltivation of ScienceaCalcutta  aP. 1-584  bV. 32