Provisional sunspot‐numbers August to November, 1933
- 7 December 1933
- journal article
- Published by American Geophysical Union (AGU) in Terrestrial Magnetism and Atmospheric Electricity
- Vol. 38 (4) , 335
- https://doi.org/10.1029/te038i004p00335-01
Abstract
(Dependent alone on observation at Zürich Observatory and its station at Arosa)Keywords
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