Indices of geomagnetic activity of the observatories Hartland (Ha), Eskdalemuir, (Es) and Lerwick (Le) April 1974

• Book ID: 115956582
• Publisher: Elsevier Science
• Year: 1974
• Tongue: English
• Weight: 71 KB
• Volume: 36
• Category: Article
• ISSN: 0021-9169
• DOI: 10.1016/0021-9169(74)90240-2