Translated to English from paper in Japanese, originally published in: Technical Report of the Kakioka Magnetic Observatory, Vol.5, No.1, 1-9, 2008 with permission of the authors.
Toya, T. & Tunomura, S. Discussion of Variation Patterns of Atmospheric Electricity
Translated to English from paper in Japanese, originally published in: Gijutsu Houkoku, Vol.37, No.3, 4 (No.105), 58-71, 1998 with permission of authors.
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