00338nam a2200145Ia 4500003000500000008004100005020001800046040001900064082000700083100001800090245003000108260003400138300000800172546001200180STCL181203s9999    xx            000 0 und d  a9788120337107  aSTCLbENcSTCL  222  aSinghal, R.P. 0aElements of space physics  bPHI LearningaNew Delhic2009  a313  aEnglish