TY  - BOOK
AU  - Ratcliffe, J. A. 
TI  - Sun, earth, and radio: an introduction to the ionosphere and magnetosphere
T2  - World University Library Series
PY  - 1977///
CY  - London
PB  - Weidenfeld and Nicolson
KW  - IonosphereMagnetosphereObservatories
ER  -