Transactions of the Helsinki and Berkeley meetings   July 25-August 6, 1960 and August 20-30, 1963 
edited by J. O. Cardus 
 - Tarragona  International Union of Geodesy and Geophysics   1969 
 - vii+387p. 
 - International Association of Geomagnetism and Aeronomy Bulletin; No. 19 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Iaga Bulletin No.19Iaga BulletinIugg
<br/><br/><label>Universal Decimal Class. No.: </label>550.38  / IAGA