TY - BOOK AU - Cardus, J. O., ed.Kaiser, T. R., ed. ED - International Association of Geomagnetism and Aeronomy ED - Symposium on Rapid Magnetic Variations TI - Symposium on rapid magnetic variations, Utrecht, 1-4 Sept. 1959 T2 - International Association of Geomagnetism and Aeronomy Bulletin; No. 16c PY - 1961/// CY - Tarragona PB - International Union of Geodesy and Geophysics KW - IuggIaga ER -