00502nam a2200169Ia 4500003000900000008004100009020001800050040001600068080001900084100002000103245007300123260004800196300001300244650004100257650001500298650001900313IN-BaIIA211028s9999    xx            000 0 eng d  a0-521-08341-9  cIIA Library  a551.510.5bRAT  aRatcliffe, J. A 3aAn Introduction to the ionosphere and magnetospherecJ. A. Ratcliffe  aCambridgebCambridge University Pressc1972  ax, 256p.  aAstronomy and astrophysics thesaurus  aIonosphere  aMagnetospheres