TY  - BOOK
AU  - Berthelier, Annick, ed.Menvielle, Michel, ed.
TI  - Geomagnetic Data,1990 : IAGA Indices
T2  - IAGA Bulletin No.32u
PY  - 1996///
CY  - France
PB  - ISGI
KW  - Geomagnetic Data Geomagnetic IndexesGeomagnetism
ER  -