Ratcliffe, J. A. Sun,earth and radio an introduction to the ionosphere and magnetosphere J. A. Ratcliffe - London Weidenfeld and Nicolson 1970 - 255p. - World University Library . ISBN: 303178949 Subjects--Topical Terms: Upper AtmosphereMagnetosphereObservatories Universal Decimal Class. No.: 551.510.535/.537 / RAT