TY  - BOOK
AU  - Gaskell,T F
TI  - The earth's ionosphere : plasma physics and electrodynamics / 
U1  - 551.4607 GAS  
PY  - 1960///.
CY  - London : 
PB  - Eyre and Spottiswoode, 
KW  - Submarine geology
N1  - Includes index
ER  -