TY  - BOOK
AU  - Sabben, D. van, ed. 
TI  - Geomagnetic data 1978: indices, rapid variations, special intervals
T2  - International Association of Geomagnetism and Aeronomy Bulletin; No. 32i
PY  - 1979///
CY  - Paris
PB  - International Union of Geodesy and Geophysics 
KW  - Iaga Bulletin-dataIaga IndicesIugg
ER  -