TY  - BOOK
AU  - Cardus, J. O., ed. 
TI  - Transactions of the Helsinki and Berkeley meetings : July 25-August 6, 1960 and August 20-30, 1963
T2  - International Association of Geomagnetism and Aeronomy Bulletin; No. 19
PY  - 1969///
CY  - Tarragona
PB  - International Union of Geodesy and Geophysics 
KW  - Iaga Bulletin No.19Iaga BulletinIugg
ER  -