00893cam a2200301 4500 294693 BD-DhUL 20150430112342.0 700108s1970 enka b 001 0 eng 70527608 B70-22382 0303178949 DLC DLC DLC BD-DhUL QC879 .R36 1970b 538.767 RAS Ratcliffe, J. A. (John Ashworth) Sun, earth and radio : an introduction to the ionosphere and magnetosphere / J. A. Ratcliffe. London : Weidenfeld & Nicolson, 1970. 256 p. : ill. ; 20 cm. 35/- World university library Includes Index Bibliography: p. 247-248. Ionosphere. Magnetosphere. Ionospheric radio wave propagation. ddc BK 36246 36246 0 0 ddc 0 538_767000000000000_RAS 0 NFIC 67295 DUSL DUSL GEN 2015-04-30 Gift 538.767 RAS A95940 2015-04-30 2015-04-30 BK