TY  - BOOK
AU  - Beynon, W. J. G., ed. Brown, G. M., ed. 
TI  - Annals of the international geophysical year: v. 3 : the ionosphere; part 1 : ionospheric vertical soundings
T2  - Annals of the International Geophysical Year
SN  - 978-1483226552
PY  - 1957///
CY  - London
PB  - Pergamon Press
KW  - International Geophysical Year
ER  -