TY  - GEN
ED  - Finlandia.,
ED  - 
TI  - magnetic Results from Nurmijarvi Geophysical Observatory 1989
T2  - Geophysical Publications
VL  - 17
SN  - 07826087
PY  - 1990///
CY  - Helsinki
PB  - Finnish Met. Institute
KW  - MAGNETISMO
KW  - IM
ER  -