00685nam a2200205Ia 4500003000900000008004100009020001800050040001600068080001900084100002000103245007300123260004800196300001300244650004100257650001500298650002500313942000700338999001500345952011900360IN-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  aMagnetospheres98024  cBK  c4562d4562  00104070aBANbBANcGENd1974-10-09l2m7o551.510.5/ RATp5090r2025-02-12s2025-02-12w1974-10-09yBKG£ 4.00