00494nam a2200169Ia 4500003000900000008004100009020001800050040001600068080001900084100001800103245007300121260004200194300001400236650004100250650001500291700001800306IN-BaIIA211028s9999    xx            000 0 eng d  a90-277-0499-6  cIIA Library  a551.510.5bGIR  aGiraud, Alain 0aIonospheric techniques and phenomenacAlain Giraud and Michel Petit.  aDordrechtbD. Reidel Publishingc1978  axx, 264p.  aAstronomy and astrophysics thesaurus  aIonosphere  aPetit, Michel