Geomagnetic data 1978 indices, rapid variations, special intervals edited by D. van Sabben - Paris International Union of Geodesy and Geophysics 1979 - xi+135p. figs - International Association of Geomagnetism and Aeronomy Bulletin; No. 32i . Subjects--Topical Terms: Iaga Bulletin-dataIaga IndicesIugg Universal Decimal Class. No.: 550.38 / IAGA