✦ LIBER ✦
An extension of the geomagnetic activity index series aa for two solar cycles (1844-1868)
✍ Scribed by Nevanlinna, Heikki; Kataja, Eero
- Book ID
- 119689356
- Publisher
- American Geophysical Union
- Year
- 1993
- Tongue
- English
- Weight
- 317 KB
- Volume
- 20
- Category
- Article
- ISSN
- 1944-8007
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