00793nam a2200253Ia 4500003000400000005001700004006001800021007000300039008004100042024001000083037001100093040001800104041001300122100002700135110009200162245008700254260000900341300001900350650001200369700003500381700009200416942001200508999001900520OSt20220930083436.0a|||||r|||| 00| 0ta220926b        |||||||| |||| 00| 0 eng d  a75699  cTheses  aCRLcCRLbeng  2engaeng  aGupta Anurag B9534843  aUniversity of Delhi. Faculty of Science. Department of Physics and Astrophysics9519374 0aAtmospheric gravity waves and their effects on the F/sub2 region of the ionosphere  c1971  a199p.ap.ccm.  aPHYSICS  a Dr. C S G K Setty Gu.9534844  aUniversity of Delhi. Faculty of Science. Department of Physics and Astrophysics9519380  cDIS2CC  c875363d875363